18690034376431 has 16 divisors (see below), whose sum is σ = 20768723314848. Its totient is φ = 16675830259200.

The previous prime is 18690034376401. The next prime is 18690034376443. The reversal of 18690034376431 is 13467343009681.

It is a cyclic number.

It is not a de Polignac number, because 18690034376431 - 2¹⁹ = 18690033852143 is a prime.

It is a super-2 number, since 2×18690034376431² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18690034376401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30168190 + ... + 30781483.

It is an arithmetic number, because the mean of its divisors is an integer number (1298045207178).

Almost surely, 2^{18690034376431} is an apocalyptic number.

18690034376431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

18690034376431 is a deficient number, since it is larger than the sum of its proper divisors (2078688938417).

18690034376431 is a wasteful number, since it uses less digits than its factorization.

18690034376431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60950202.

The product of its (nonzero) digits is 7838208, while the sum is 55.

The spelling of 18690034376431 in words is "eighteen trillion, six hundred ninety billion, thirty-four million, three hundred seventy-six thousand, four hundred thirty-one".