2154761490 has 32 divisors (see below), whose sum is σ = 5910203520. Its totient is φ = 492516864.

The previous prime is 2154761461. The next prime is 2154761527. The reversal of 2154761490 is 941674512.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5130175 + ... + 5130594.

It is an arithmetic number, because the mean of its divisors is an integer number (184693860).

Almost surely, 2^2154761490 is an apocalyptic number.

2154761490 is an abundant number, since it is smaller than the sum of its proper divisors (3755442030).

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

2154761490 is a wasteful number, since it uses less digits than its factorization.

2154761490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10260786.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 2154761490 is about 46419.4085485802. The cubic root of 2154761490 is about 1291.6149655245.

The spelling of 2154761490 in words is "two billion, one hundred fifty-four million, seven hundred sixty-one thousand, four hundred ninety".