1992155 has 16 divisors (see below), whose sum is σ = 2700000. Its totient is φ = 1397760.

The previous prime is 1992139. The next prime is 1992163. The reversal of 1992155 is 5512991.

It is not a de Polignac number, because 1992155 - 2⁴ = 1992139 is a prime.

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, 971 + ... + 2219.

It is an arithmetic number, because the mean of its divisors is an integer number (168750).

2^1992155 is an apocalyptic number.

1992155 is a deficient number, since it is larger than the sum of its proper divisors (707845).

1992155 is a wasteful number, since it uses less digits than its factorization.

1992155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1294.

The product of its digits is 4050, while the sum is 32.

The square root of 1992155 is about 1411.4372107891. The cubic root of 1992155 is about 125.8271544510.

The spelling of 1992155 in words is "one million, nine hundred ninety-two thousand, one hundred fifty-five".