2690490816 has 420 divisors, whose sum is σ = 8976417912. Its totient is φ = 795764736.

The previous prime is 2690490799. The next prime is 2690490833. The reversal of 2690490816 is 6180940962.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2690490799) and next prime (2690490833).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 32415511 + ... + 32415593.

Almost surely, 2^2690490816 is an apocalyptic number.

2690490816 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2690490816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4488208956).

2690490816 is an abundant number, since it is smaller than the sum of its proper divisors (6285927096).

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

2690490816 is a wasteful number, since it uses less digits than its factorization.

2690490816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170 (or 138 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 2690490816 is about 51869.9413533503. The cubic root of 2690490816 is about 1390.8399967355.

The spelling of 2690490816 in words is "two billion, six hundred ninety million, four hundred ninety thousand, eight hundred sixteen".