9497212638 has 32 divisors (see below), whose sum is σ = 20024340480. Its totient is φ = 2998430880.

The previous prime is 9497212633. The next prime is 9497212661. The reversal of 9497212638 is 8362127949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9497212631) 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, 534453 + ... + 551936.

It is an arithmetic number, because the mean of its divisors is an integer number (625760640).

Almost surely, 2^9497212638 is an apocalyptic number.

9497212638 is an abundant number, since it is smaller than the sum of its proper divisors (10527127842).

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

9497212638 is a wasteful number, since it uses less digits than its factorization.

9497212638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1086472.

The product of its digits is 1306368, while the sum is 51.

The square root of 9497212638 is about 97453.6435337335. The cubic root of 9497212638 is about 2117.7046354851.

The spelling of 9497212638 in words is "nine billion, four hundred ninety-seven million, two hundred twelve thousand, six hundred thirty-eight".