747918145 has 32 divisors (see below), whose sum is σ = 1025988768. Its totient is φ = 518504448.

The previous prime is 747918107. The next prime is 747918151. The reversal of 747918145 is 541819747.

It is a happy number.

It can be written as a sum of positive squares in 16 ways, for example, as 480530241 + 267387904 = 21921^2 + 16352^2 .

It is a cyclic number.

It is not a de Polignac number, because 747918145 - 2²⁹ = 211047233 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 747918095 and 747918104.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 681237 + ... + 682333.

It is an arithmetic number, because the mean of its divisors is an integer number (32062149).

Almost surely, 2^747918145 is an apocalyptic number.

It is an amenable number.

747918145 is a deficient number, since it is larger than the sum of its proper divisors (278070623).

747918145 is a wasteful number, since it uses less digits than its factorization.

747918145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1749.

The product of its digits is 282240, while the sum is 46.

The square root of 747918145 is about 27348.0921638055. The cubic root of 747918145 is about 907.7188547994.

The spelling of 747918145 in words is "seven hundred forty-seven million, nine hundred eighteen thousand, one hundred forty-five".