7487049731 has 16 divisors (see below), whose sum is σ = 9009384960. Its totient is φ = 6078084480.

The previous prime is 7487049721. The next prime is 7487049733. The reversal of 7487049731 is 1379407847.

It is a cyclic number.

It is not a de Polignac number, because 7487049731 - 2¹⁰ = 7487048707 is a prime.

It is a super-2 number, since 2×7487049731² (a number of 21 digits) contains 22 as substring.

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 7487049731.

It is not an unprimeable number, because it can be changed into a prime (7487049733) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 921770 + ... + 929856.

It is an arithmetic number, because the mean of its divisors is an integer number (563086560).

Almost surely, 2^7487049731 is an apocalyptic number.

7487049731 is a deficient number, since it is larger than the sum of its proper divisors (1522335229).

7487049731 is a wasteful number, since it uses less digits than its factorization.

7487049731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15074.

The product of its (nonzero) digits is 1185408, while the sum is 50.

The square root of 7487049731 is about 86527.7396619142. The cubic root of 7487049731 is about 1956.3065361947.

The spelling of 7487049731 in words is "seven billion, four hundred eighty-seven million, forty-nine thousand, seven hundred thirty-one".