1642445364 has 96 divisors (see below), whose sum is σ = 4588609536. Its totient is φ = 447068160.

The previous prime is 1642445359. The next prime is 1642445369. The reversal of 1642445364 is 4635442461.

It is an interprime number because it is at equal distance from previous prime (1642445359) and next prime (1642445369).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1642445369) 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, 522004 + ... + 525140.

It is an arithmetic number, because the mean of its divisors is an integer number (47798016).

Almost surely, 2^1642445364 is an apocalyptic number.

1642445364 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1642445364, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2294304768).

1642445364 is an abundant number, since it is smaller than the sum of its proper divisors (2946164172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1642445364 is a wasteful number, since it uses less digits than its factorization.

1642445364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3445 (or 3443 counting only the distinct ones).

The product of its digits is 276480, while the sum is 39.

The square root of 1642445364 is about 40527.0941963521. The cubic root of 1642445364 is about 1179.8595456688.

The spelling of 1642445364 in words is "one billion, six hundred forty-two million, four hundred forty-five thousand, three hundred sixty-four".