1372740145 has 24 divisors (see below), whose sum is σ = 1968036264. Its totient is φ = 915860736.

The previous prime is 1372740091. The next prime is 1372740151. The reversal of 1372740145 is 5410472731.

It can be written as a sum of positive squares in 4 ways, for example, as 201526416 + 1171213729 = 14196^2 + 34223^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1372740145 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1372740145.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66652 + ... + 84781.

It is an arithmetic number, because the mean of its divisors is an integer number (82001511).

Almost surely, 2^1372740145 is an apocalyptic number.

It is an amenable number.

1372740145 is a deficient number, since it is larger than the sum of its proper divisors (595296119).

1372740145 is a wasteful number, since it uses less digits than its factorization.

1372740145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151489 (or 151482 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 1372740145 is about 37050.5080262066. The cubic root of 1372740145 is about 1111.3805145651.

The spelling of 1372740145 in words is "one billion, three hundred seventy-two million, seven hundred forty thousand, one hundred forty-five".