1992154 has 8 divisors (see below), whose sum is σ = 3069108. Its totient is φ = 969120.

The previous prime is 1992139. The next prime is 1992163. The reversal of 1992154 is 4512991.

It can be written as a sum of positive squares in 2 ways, for example, as 1375929 + 616225 = 1173^2 + 785^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13387 + ... + 13534.

2^1992154 is an apocalyptic number.

1992154 is a deficient number, since it is larger than the sum of its proper divisors (1076954).

1992154 is a wasteful number, since it uses less digits than its factorization.

1992154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26960.

The product of its digits is 3240, while the sum is 31.

The square root of 1992154 is about 1411.4368565402. The cubic root of 1992154 is about 125.8271333972.

The spelling of 1992154 in words is "one million, nine hundred ninety-two thousand, one hundred fifty-four".