2148779290 has 32 divisors (see below), whose sum is σ = 4492819584. Its totient is φ = 724645440.

The previous prime is 2148779261. The next prime is 2148779317. The reversal of 2148779290 is 929778412.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 247344 + ... + 255883.

It is an arithmetic number, because the mean of its divisors is an integer number (140400612).

Almost surely, 2^2148779290 is an apocalyptic number.

2148779290 is an abundant number, since it is smaller than the sum of its proper divisors (2344040294).

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

2148779290 is a wasteful number, since it uses less digits than its factorization.

2148779290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503302.

The product of its (nonzero) digits is 508032, while the sum is 49.

The square root of 2148779290 is about 46354.9273540581. The cubic root of 2148779290 is about 1290.4185669750.

The spelling of 2148779290 in words is "two billion, one hundred forty-eight million, seven hundred seventy-nine thousand, two hundred ninety".