1642947152 has 80 divisors (see below), whose sum is σ = 4016742912. Its totient is φ = 632357760.

The previous prime is 1642947151. The next prime is 1642947191. The reversal of 1642947152 is 2517492461.

It is a super-2 number, since 2×1642947152² = 5398550688529822208, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1642947151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94223 + ... + 110289.

Almost surely, 2^1642947152 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1642947152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2008371456).

1642947152 is an abundant number, since it is smaller than the sum of its proper divisors (2373795760).

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

1642947152 is a wasteful number, since it uses less digits than its factorization.

1642947152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16176 (or 16170 counting only the distinct ones).

The product of its digits is 120960, while the sum is 41.

The square root of 1642947152 is about 40533.2844955846. The cubic root of 1642947152 is about 1179.9796874795.

It can be divided in two parts, 164294715 and 2, that multiplied together give a triangular number (328589430 = T₂₅₆₃₅).

The spelling of 1642947152 in words is "one billion, six hundred forty-two million, nine hundred forty-seven thousand, one hundred fifty-two".