7911392490 has 48 divisors (see below), whose sum is σ = 20593018368. Its totient is φ = 2107304928.

The previous prime is 7911392449. The next prime is 7911392491. The reversal of 7911392490 is 942931197.

7911392490 is a `hidden beast` number, since 79 + 1 + 1 + 3 + 92 + 490 = 666.

It is a super-2 number, since 2×7911392490² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7911392491) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30279 + ... + 129381.

It is an arithmetic number, because the mean of its divisors is an integer number (429021216).

Almost surely, 2^7911392490 is an apocalyptic number.

7911392490 is an abundant number, since it is smaller than the sum of its proper divisors (12681625878).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7911392490 is a wasteful number, since it uses less digits than its factorization.

7911392490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100003 (or 100000 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 7911392490 is about 88946.0088480647. The cubic root of 7911392490 is about 1992.5886104103.

The spelling of 7911392490 in words is "seven billion, nine hundred eleven million, three hundred ninety-two thousand, four hundred ninety".