90481737919 has 4 divisors (see below), whose sum is σ = 91965045160. Its totient is φ = 88998430680.

The previous prime is 90481737911. The next prime is 90481737947. The reversal of 90481737919 is 91973718409.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 90481737919 - 2³ = 90481737911 is a prime.

It is a super-2 number, since 2×90481737919² (a number of 23 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 (90481737911) 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, 741653529 + ... + 741653650.

It is an arithmetic number, because the mean of its divisors is an integer number (22991261290).

Almost surely, 2^90481737919 is an apocalyptic number.

90481737919 is a deficient number, since it is larger than the sum of its proper divisors (1483307241).

90481737919 is a wasteful number, since it uses less digits than its factorization.

90481737919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1483307240.

The product of its (nonzero) digits is 3429216, while the sum is 58.

The spelling of 90481737919 in words is "ninety billion, four hundred eighty-one million, seven hundred thirty-seven thousand, nine hundred nineteen".