7397631990 has 192 divisors, whose sum is σ = 23532687360. Its totient is φ = 1636225920.

The previous prime is 7397631973. The next prime is 7397632027. The reversal of 7397631990 is 991367937.

7397631990 is a `hidden beast` number, since 7 + 397 + 63 + 199 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 520296 + ... + 534324.

It is an arithmetic number, because the mean of its divisors is an integer number (122566080).

Almost surely, 2^7397631990 is an apocalyptic number.

7397631990 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 7397631990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11766343680).

7397631990 is an abundant number, since it is smaller than the sum of its proper divisors (16135055370).

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

7397631990 is a wasteful number, since it uses less digits than its factorization.

7397631990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14089 (or 14077 counting only the distinct ones).

The product of its (nonzero) digits is 1928934, while the sum is 54.

The square root of 7397631990 is about 86009.4877905920. The cubic root of 7397631990 is about 1948.4872765038.

The spelling of 7397631990 in words is "seven billion, three hundred ninety-seven million, six hundred thirty-one thousand, nine hundred ninety".