15409540794 has 16 divisors (see below), whose sum is σ = 31190396832. Its totient is φ = 5074627728.

The previous prime is 15409540739. The next prime is 15409540807. The reversal of 15409540794 is 49704590451.

It is a happy number.

It is a super-3 number, since 3×15409540794³ (a number of 32 digits) contains 333 as substring.

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, 15470929 + ... + 15471924.

It is an arithmetic number, because the mean of its divisors is an integer number (1949399802).

Almost surely, 2^15409540794 is an apocalyptic number.

15409540794 is an abundant number, since it is smaller than the sum of its proper divisors (15780856038).

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

15409540794 is a wasteful number, since it uses less digits than its factorization.

15409540794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30942941.

The product of its (nonzero) digits is 907200, while the sum is 48.

The spelling of 15409540794 in words is "fifteen billion, four hundred nine million, five hundred forty thousand, seven hundred ninety-four".