18742480776 has 48 divisors (see below), whose sum is σ = 51456254460. Its totient is φ = 6161909760.

The previous prime is 18742480759. The next prime is 18742480793. The reversal of 18742480776 is 67708424781.

It is an interprime number because it is at equal distance from previous prime (18742480759) and next prime (18742480793).

It can be written as a sum of positive squares in 2 ways, for example, as 16835062500 + 1907418276 = 129750^2 + 43674^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1777705 + ... + 1788216.

Almost surely, 2^18742480776 is an apocalyptic number.

It is an amenable number.

18742480776 is an abundant number, since it is smaller than the sum of its proper divisors (32713773684).

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

18742480776 is a wasteful number, since it uses less digits than its factorization.

18742480776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3566006 (or 3565999 counting only the distinct ones).

The product of its (nonzero) digits is 4214784, while the sum is 54.

The spelling of 18742480776 in words is "eighteen billion, seven hundred forty-two million, four hundred eighty thousand, seven hundred seventy-six".