18997454102 has 16 divisors (see below), whose sum is σ = 31150593792. Its totient is φ = 8617470120.

The previous prime is 18997454101. The next prime is 18997454107. The reversal of 18997454102 is 20145479981.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18997454101) 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, 875858 + ... + 897285.

It is an arithmetic number, because the mean of its divisors is an integer number (1946912112).

Almost surely, 2^18997454102 is an apocalyptic number.

18997454102 is a deficient number, since it is larger than the sum of its proper divisors (12153139690).

18997454102 is a wasteful number, since it uses less digits than its factorization.

18997454102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1773643.

The product of its (nonzero) digits is 725760, while the sum is 50.

The spelling of 18997454102 in words is "eighteen billion, nine hundred ninety-seven million, four hundred fifty-four thousand, one hundred two".