1645356363 has 32 divisors (see below), whose sum is σ = 2572469760. Its totient is φ = 915805440.

The previous prime is 1645356353. The next prime is 1645356371. The reversal of 1645356363 is 3636535461.

It is not a de Polignac number, because 1645356363 - 2⁴ = 1645356347 is a prime.

It is a super-2 number, since 2×1645356363² = 5414395122529175538, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1645356353) 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, 754008 + ... + 756186.

It is an arithmetic number, because the mean of its divisors is an integer number (80389680).

Almost surely, 2^1645356363 is an apocalyptic number.

1645356363 is a deficient number, since it is larger than the sum of its proper divisors (927113397).

1645356363 is a wasteful number, since it uses less digits than its factorization.

1645356363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3107.

The product of its digits is 583200, while the sum is 42.

The square root of 1645356363 is about 40562.9925301376. The cubic root of 1645356363 is about 1180.5561782497.

The spelling of 1645356363 in words is "one billion, six hundred forty-five million, three hundred fifty-six thousand, three hundred sixty-three".