45019262731 has 4 divisors (see below), whose sum is σ = 45432283600. Its totient is φ = 44606241864.

The previous prime is 45019262713. The next prime is 45019262741. The reversal of 45019262731 is 13726291054.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 45019262731 - 2⁵ = 45019262699 is a prime.

It is a super-2 number, since 2×45019262731² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45019262741) 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, 206510271 + ... + 206510488.

It is an arithmetic number, because the mean of its divisors is an integer number (11358070900).

Almost surely, 2^45019262731 is an apocalyptic number.

45019262731 is a deficient number, since it is larger than the sum of its proper divisors (413020869).

45019262731 is a wasteful number, since it uses less digits than its factorization.

45019262731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413020868.

The product of its (nonzero) digits is 90720, while the sum is 40.

The spelling of 45019262731 in words is "forty-five billion, nineteen million, two hundred sixty-two thousand, seven hundred thirty-one".