1662492251 has 32 divisors (see below), whose sum is σ = 2027376000. Its totient is φ = 1332882432.

The previous prime is 1662492197. The next prime is 1662492253. The reversal of 1662492251 is 1522942661.

It is a happy number.

It is not a de Polignac number, because 1662492251 - 2¹⁸ = 1662230107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1662492253) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2921495 + ... + 2922063.

It is an arithmetic number, because the mean of its divisors is an integer number (63355500).

Almost surely, 2^1662492251 is an apocalyptic number.

1662492251 is a deficient number, since it is larger than the sum of its proper divisors (364883749).

1662492251 is a wasteful number, since it uses less digits than its factorization.

1662492251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031.

The product of its digits is 51840, while the sum is 38.

The square root of 1662492251 is about 40773.6710513047. The cubic root of 1662492251 is about 1184.6404105156.

The spelling of 1662492251 in words is "one billion, six hundred sixty-two million, four hundred ninety-two thousand, two hundred fifty-one".