15386420634 has 16 divisors (see below), whose sum is σ = 33139983072. Its totient is φ = 4734283248.

The previous prime is 15386420627. The next prime is 15386420657. The reversal of 15386420634 is 43602468351.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98630824 + ... + 98630979.

It is an arithmetic number, because the mean of its divisors is an integer number (2071248942).

Almost surely, 2^15386420634 is an apocalyptic number.

15386420634 is an abundant number, since it is smaller than the sum of its proper divisors (17753562438).

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

15386420634 is a wasteful number, since it uses less digits than its factorization.

15386420634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197261821.

The product of its (nonzero) digits is 414720, while the sum is 42.

Adding to 15386420634 its reverse (43602468351), we get a palindrome (58988888985).

The spelling of 15386420634 in words is "fifteen billion, three hundred eighty-six million, four hundred twenty thousand, six hundred thirty-four".