1645100352 has 84 divisors (see below), whose sum is σ = 5389022496. Its totient is φ = 470027520.

The previous prime is 1645100299. The next prime is 1645100357. The reversal of 1645100352 is 2530015461.

1645100352 is a `hidden beast` number, since 1 + 645 + 10 + 0 + 3 + 5 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (84).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1645100357) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 199974 + ... + 208037.

Almost surely, 2^1645100352 is an apocalyptic number.

1645100352 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1645100352 is an abundant number, since it is smaller than the sum of its proper divisors (3743922144).

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

1645100352 is a wasteful number, since it uses less digits than its factorization.

1645100352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408036 (or 408023 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 1645100352 is about 40559.8366860617. The cubic root of 1645100352 is about 1180.4949451026.

The spelling of 1645100352 in words is "one billion, six hundred forty-five million, one hundred thousand, three hundred fifty-two".