1992651 has 8 divisors (see below), whose sum is σ = 2772480. Its totient is φ = 1270632.

The previous prime is 1992643. The next prime is 1992673. The reversal of 1992651 is 1562991.

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

It is not a de Polignac number, because 1992651 - 2³ = 1992643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1992611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14371 + ... + 14508.

It is an arithmetic number, because the mean of its divisors is an integer number (346560).

2^1992651 is an apocalyptic number.

1992651 is a deficient number, since it is larger than the sum of its proper divisors (779829).

1992651 is a wasteful number, since it uses less digits than its factorization.

1992651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28905.

The product of its digits is 4860, while the sum is 33.

The square root of 1992651 is about 1411.6129072802. The cubic root of 1992651 is about 125.8375962573.

It can be divided in two parts, 199 and 2651, that added together give a triangular number (2850 = T₇₅).

The spelling of 1992651 in words is "one million, nine hundred ninety-two thousand, six hundred fifty-one".