49164287731 has 4 divisors (see below), whose sum is σ = 52946156032. Its totient is φ = 45382419432.

The previous prime is 49164287723. The next prime is 49164287737. The reversal of 49164287731 is 13778246194.

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 49164287731 - 2³ = 49164287723 is a prime.

It is a super-2 number, since 2×49164287731² (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 (49164287737) 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, 1890934131 + ... + 1890934156.

It is an arithmetic number, because the mean of its divisors is an integer number (13236539008).

Almost surely, 2^49164287731 is an apocalyptic number.

49164287731 is a deficient number, since it is larger than the sum of its proper divisors (3781868301).

49164287731 is a wasteful number, since it uses less digits than its factorization.

49164287731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3781868300.

The product of its digits is 2032128, while the sum is 52.

The spelling of 49164287731 in words is "forty-nine billion, one hundred sixty-four million, two hundred eighty-seven thousand, seven hundred thirty-one".