2758557990 has 16 divisors (see below), whose sum is σ = 6620539248. Its totient is φ = 735615456.

The previous prime is 2758557979. The next prime is 2758558003. The reversal of 2758557990 is 997558572.

It is a self number, because there is not a number n which added to its sum of digits gives 2758557990.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45975937 + ... + 45975996.

It is an arithmetic number, because the mean of its divisors is an integer number (413783703).

Almost surely, 2^2758557990 is an apocalyptic number.

2758557990 is an abundant number, since it is smaller than the sum of its proper divisors (3861981258).

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

2758557990 is a wasteful number, since it uses less digits than its factorization.

2758557990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91951943.

The product of its (nonzero) digits is 7938000, while the sum is 57.

The square root of 2758557990 is about 52521.9762575629. The cubic root of 2758557990 is about 1402.4714830517.

The spelling of 2758557990 in words is "two billion, seven hundred fifty-eight million, five hundred fifty-seven thousand, nine hundred ninety".