18393311010 has 32 divisors (see below), whose sum is σ = 44802816192. Its totient is φ = 4831675200.

The previous prime is 18393310993. The next prime is 18393311047. The reversal of 18393311010 is 1011339381.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4573441 + ... + 4577460.

It is an arithmetic number, because the mean of its divisors is an integer number (1400088006).

Almost surely, 2^18393311010 is an apocalyptic number.

18393311010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18393311010 is an abundant number, since it is smaller than the sum of its proper divisors (26409505182).

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

18393311010 is a wasteful number, since it uses less digits than its factorization.

18393311010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9150978.

The product of its (nonzero) digits is 1944, while the sum is 30.

The spelling of 18393311010 in words is "eighteen billion, three hundred ninety-three million, three hundred eleven thousand, ten".