20001818402 has 8 divisors (see below), whose sum is σ = 30004326912. Its totient is φ = 10000376100.

The previous prime is 20001818399. The next prime is 20001818411. The reversal of 20001818402 is 20481810002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217874 + ... + 295757.

It is an arithmetic number, because the mean of its divisors is an integer number (3750540864).

Almost surely, 2^20001818402 is an apocalyptic number.

20001818402 is a deficient number, since it is larger than the sum of its proper divisors (10002508510).

20001818402 is a wasteful number, since it uses less digits than its factorization.

20001818402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533104.

The product of its (nonzero) digits is 1024, while the sum is 26.

The spelling of 20001818402 in words is "twenty billion, one million, eight hundred eighteen thousand, four hundred two".