1641702144 has 72 divisors (see below), whose sum is σ = 4599327040. Its totient is φ = 518427648.

The previous prime is 1641702131. The next prime is 1641702149. The reversal of 1641702144 is 4412071461.

It is a super-2 number, since 2×1641702144² = 5390371859228393472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1641702149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41662 + ... + 70845.

Almost surely, 2^1641702144 is an apocalyptic number.

It is an amenable number.

1641702144 is an abundant number, since it is smaller than the sum of its proper divisors (2957624896).

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

1641702144 is a wasteful number, since it uses less digits than its factorization.

1641702144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112545 (or 112531 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 1641702144 is about 40517.9237375263. The cubic root of 1641702144 is about 1179.6815534442.

The spelling of 1641702144 in words is "one billion, six hundred forty-one million, seven hundred two thousand, one hundred forty-four".