1642653760 has 112 divisors (see below), whose sum is σ = 4358396160. Its totient is φ = 584560640.

The previous prime is 1642653731. The next prime is 1642653773. The reversal of 1642653760 is 673562461.

It is a super-2 number, since 2×1642653760² = 5396622750484275200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160476 + ... + 170404.

Almost surely, 2^1642653760 is an apocalyptic number.

1642653760 is a gapful number since it is divisible by the number (10) 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 1642653760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2179198080).

1642653760 is an abundant number, since it is smaller than the sum of its proper divisors (2715742400).

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

1642653760 is a wasteful number, since it uses less digits than its factorization.

1642653760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10004 (or 9994 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 40.

The square root of 1642653760 is about 40529.6651848988. The cubic root of 1642653760 is about 1179.9094443578.

The spelling of 1642653760 in words is "one billion, six hundred forty-two million, six hundred fifty-three thousand, seven hundred sixty".