18030879402 has 16 divisors (see below), whose sum is σ = 36067118400. Its totient is φ = 6009399872.

The previous prime is 18030879367. The next prime is 18030879409. The reversal of 18030879402 is 20497803081.

It is a super-2 number, since 2×18030879402² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18030879409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178902 + ... + 260897.

It is an arithmetic number, because the mean of its divisors is an integer number (2254194900).

Almost surely, 2^18030879402 is an apocalyptic number.

18030879402 is an abundant number, since it is smaller than the sum of its proper divisors (18036238998).

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

18030879402 is a wasteful number, since it uses less digits than its factorization.

18030879402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446637.

The product of its (nonzero) digits is 96768, while the sum is 42.

The spelling of 18030879402 in words is "eighteen billion, thirty million, eight hundred seventy-nine thousand, four hundred two".