7499745730 has 32 divisors (see below), whose sum is σ = 13635972864. Its totient is φ = 2969726976.

The previous prime is 7499745727. The next prime is 7499745731. The reversal of 7499745730 is 375479947.

It is not an unprimeable number, because it can be changed into a prime (7499745731) 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, 409959 + ... + 427861.

It is an arithmetic number, because the mean of its divisors is an integer number (426124152).

Almost surely, 2^7499745730 is an apocalyptic number.

7499745730 is a deficient number, since it is larger than the sum of its proper divisors (6136227134).

7499745730 is a wasteful number, since it uses less digits than its factorization.

7499745730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18330.

The product of its (nonzero) digits is 6667920, while the sum is 55.

The square root of 7499745730 is about 86601.0723374717. The cubic root of 7499745730 is about 1957.4116995923.

It can be divided in two parts, 749 and 9745730, that added together give a palindrome (9746479).

The spelling of 7499745730 in words is "seven billion, four hundred ninety-nine million, seven hundred forty-five thousand, seven hundred thirty".