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1372740745 = 5274548149
BaseRepresentation
bin101000111010010…
…0101110010001001
310112200001110021211
41101310211302021
510302410200440
6344114333121
746006050415
oct12164456211
93480043254
101372740745
11644970492
1232388a1a1
1318b52613c
14d0457d45
15807aceea
hex51d25c89

1372740745 has 4 divisors (see below), whose sum is σ = 1647288900. Its totient is φ = 1098192592.

The previous prime is 1372740739. The next prime is 1372740749. The reversal of 1372740745 is 5470472731.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 891201609 + 481539136 = 29853^2 + 21944^2 .

It is a cyclic number.

It is not a de Polignac number, because 1372740745 - 27 = 1372740617 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1372740698 and 1372740707.

It is not an unprimeable number, because it can be changed into a prime (1372740749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137274070 + ... + 137274079.

It is an arithmetic number, because the mean of its divisors is an integer number (411822225).

Almost surely, 21372740745 is an apocalyptic number.

It is an amenable number.

1372740745 is a deficient number, since it is larger than the sum of its proper divisors (274548155).

1372740745 is an equidigital number, since it uses as much as digits as its factorization.

1372740745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274548154.

The product of its (nonzero) digits is 164640, while the sum is 40.

The square root of 1372740745 is about 37050.5161232607. The cubic root of 1372740745 is about 1111.3806764865.

The spelling of 1372740745 in words is "one billion, three hundred seventy-two million, seven hundred forty thousand, seven hundred forty-five".

Divisors: 1 5 274548149 1372740745