1992151 has 4 divisors (see below), whose sum is σ = 2276752. Its totient is φ = 1707552.

The previous prime is 1992139. The next prime is 1992163. The reversal of 1992151 is 1512991.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1512991 = 53 ⋅28547.

It is an interprime number because it is at equal distance from previous prime (1992139) and next prime (1992163).

It is not a de Polignac number, because 1992151 - 2⁵ = 1992119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1992101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142290 + ... + 142303.

It is an arithmetic number, because the mean of its divisors is an integer number (569188).

2^1992151 is an apocalyptic number.

1992151 is a deficient number, since it is larger than the sum of its proper divisors (284601).

1992151 is an equidigital number, since it uses as much as digits as its factorization.

1992151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284600.

The product of its digits is 810, while the sum is 28.

The square root of 1992151 is about 1411.4357937930. The cubic root of 1992151 is about 125.8270702359.

The spelling of 1992151 in words is "one million, nine hundred ninety-two thousand, one hundred fifty-one".