18472694919 has 16 divisors (see below), whose sum is σ = 29630388480. Its totient is φ = 10000255680.

The previous prime is 18472694839. The next prime is 18472694953. The reversal of 18472694919 is 91949627481.

It is not a de Polignac number, because 18472694919 - 2¹⁷ = 18472563847 is a prime.

It is a super-2 number, since 2×18472694919² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18472674919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23148342 + ... + 23149139.

It is an arithmetic number, because the mean of its divisors is an integer number (1851899280).

Almost surely, 2^18472694919 is an apocalyptic number.

18472694919 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

18472694919 is a deficient number, since it is larger than the sum of its proper divisors (11157693561).

18472694919 is a wasteful number, since it uses less digits than its factorization.

18472694919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46297510.

The product of its digits is 7838208, while the sum is 60.

The spelling of 18472694919 in words is "eighteen billion, four hundred seventy-two million, six hundred ninety-four thousand, nine hundred nineteen".