1642251741 has 16 divisors (see below), whose sum is σ = 2359027776. Its totient is φ = 1010221056.

The previous prime is 1642251707. The next prime is 1642251749. The reversal of 1642251741 is 1471522461.

It is not a de Polignac number, because 1642251741 - 2²⁷ = 1508034013 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1642251749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116701 + ... + 130013.

It is an arithmetic number, because the mean of its divisors is an integer number (147439236).

Almost surely, 2^1642251741 is an apocalyptic number.

It is an amenable number.

1642251741 is a deficient number, since it is larger than the sum of its proper divisors (716776035).

1642251741 is a wasteful number, since it uses less digits than its factorization.

1642251741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16492.

The product of its digits is 13440, while the sum is 33.

The square root of 1642251741 is about 40524.7053166337. The cubic root of 1642251741 is about 1179.8131804690.

The spelling of 1642251741 in words is "one billion, six hundred forty-two million, two hundred fifty-one thousand, seven hundred forty-one".