2691496990 has 80 divisors (see below), whose sum is σ = 6087267648. Its totient is φ = 851715648.

The previous prime is 2691496963. The next prime is 2691497021. The reversal of 2691496990 is 996941962.

2691496990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 307819 + ... + 316441.

Almost surely, 2^2691496990 is an apocalyptic number.

2691496990 is an abundant number, since it is smaller than the sum of its proper divisors (3395770658).

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

2691496990 is an equidigital number, since it uses as much as digits as its factorization.

2691496990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8671 (or 8650 counting only the distinct ones).

The product of its (nonzero) digits is 1889568, while the sum is 55.

The square root of 2691496990 is about 51879.6394551851. The cubic root of 2691496990 is about 1391.0133545260.

It can be divided in two parts, 26914 and 96990, that added together give a square (123904 = 352²).

The spelling of 2691496990 in words is "two billion, six hundred ninety-one million, four hundred ninety-six thousand, nine hundred ninety".