12290614638 has 32 divisors (see below), whose sum is σ = 25254135456. Its totient is φ = 3984795648.

The previous prime is 12290614631. The next prime is 12290614643. The reversal of 12290614638 is 83641609221.

It is a self number, because there is not a number n which added to its sum of digits gives 12290614638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12290614631) 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, 807870 + ... + 822942.

It is an arithmetic number, because the mean of its divisors is an integer number (789191733).

Almost surely, 2^12290614638 is an apocalyptic number.

12290614638 is an abundant number, since it is smaller than the sum of its proper divisors (12963520818).

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

12290614638 is a wasteful number, since it uses less digits than its factorization.

12290614638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18788.

The product of its (nonzero) digits is 124416, while the sum is 42.

The spelling of 12290614638 in words is "twelve billion, two hundred ninety million, six hundred fourteen thousand, six hundred thirty-eight".