1642656074 has 8 divisors (see below), whose sum is σ = 2497737540. Its totient is φ = 810076896.

The previous prime is 1642656061. The next prime is 1642656089. The reversal of 1642656074 is 4706562461.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1521546049 + 121110025 = 39007^2 + 11005^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5625389 + ... + 5625680.

Almost surely, 2^1642656074 is an apocalyptic number.

1642656074 is a deficient number, since it is larger than the sum of its proper divisors (855081466).

1642656074 is a wasteful number, since it uses less digits than its factorization.

1642656074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11251144.

The product of its (nonzero) digits is 241920, while the sum is 41.

The square root of 1642656074 is about 40529.6937318801. The cubic root of 1642656074 is about 1179.9099984022.

The spelling of 1642656074 in words is "one billion, six hundred forty-two million, six hundred fifty-six thousand, seventy-four".