1954491628 has 12 divisors (see below), whose sum is σ = 3422757240. Its totient is φ = 976560992.

The previous prime is 1954491593. The next prime is 1954491691. The reversal of 1954491628 is 8261944591.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164758 + ... + 176221.

It is an arithmetic number, because the mean of its divisors is an integer number (285229770).

Almost surely, 2^1954491628 is an apocalyptic number.

It is an amenable number.

1954491628 is a deficient number, since it is larger than the sum of its proper divisors (1468265612).

1954491628 is a wasteful number, since it uses less digits than its factorization.

1954491628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342416 (or 342414 counting only the distinct ones).

The product of its digits is 622080, while the sum is 49.

The square root of 1954491628 is about 44209.6327512455. The cubic root of 1954491628 is about 1250.2914793332.

The spelling of 1954491628 in words is "one billion, nine hundred fifty-four million, four hundred ninety-one thousand, six hundred twenty-eight".