18574671380 has 12 divisors (see below), whose sum is σ = 39006809940. Its totient is φ = 7429868544.

The previous prime is 18574671371. The next prime is 18574671389. The reversal of 18574671380 is 8317647581.

It is an interprime number because it is at equal distance from previous prime (18574671371) and next prime (18574671389).

It can be written as a sum of positive squares in 2 ways, for example, as 7794417796 + 10780253584 = 88286^2 + 103828^2 .

It is a super-2 number, since 2×18574671380² (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 (18574671389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 464366765 + ... + 464366804.

It is an arithmetic number, because the mean of its divisors is an integer number (3250567495).

Almost surely, 2^18574671380 is an apocalyptic number.

18574671380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18574671380 is an abundant number, since it is smaller than the sum of its proper divisors (20432138560).

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

18574671380 is a wasteful number, since it uses less digits than its factorization.

18574671380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 928733578 (or 928733576 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 50.

The spelling of 18574671380 in words is "eighteen billion, five hundred seventy-four million, six hundred seventy-one thousand, three hundred eighty".