2148664774 has 4 divisors (see below), whose sum is σ = 3222997164. Its totient is φ = 1074332386.

The previous prime is 2148664759. The next prime is 2148664787. The reversal of 2148664774 is 4774668412.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×2148664774² = 9233520622056942152, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 537166192 + ... + 537166195.

It is an arithmetic number, because the mean of its divisors is an integer number (805749291).

Almost surely, 2^2148664774 is an apocalyptic number.

2148664774 is a deficient number, since it is larger than the sum of its proper divisors (1074332390).

2148664774 is a wasteful number, since it uses less digits than its factorization.

2148664774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1074332389.

The product of its digits is 1806336, while the sum is 49.

The square root of 2148664774 is about 46353.6921291066. The cubic root of 2148664774 is about 1290.3956429209.

The spelling of 2148664774 in words is "two billion, one hundred forty-eight million, six hundred sixty-four thousand, seven hundred seventy-four".