163749964 has 18 divisors (see below), whose sum is σ = 333348540. Its totient is φ = 70178472.

The previous prime is 163749959. The next prime is 163749983. The reversal of 163749964 is 469947361.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 417534 + ... + 417925.

Almost surely, 2^163749964 is an apocalyptic number.

163749964 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

163749964 is an abundant number, since it is smaller than the sum of its proper divisors (169598576).

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

163749964 is a wasteful number, since it uses less digits than its factorization.

163749964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835477 (or 835468 counting only the distinct ones).

The product of its digits is 979776, while the sum is 49.

The square root of 163749964 is about 12796.4824854333. The cubic root of 163749964 is about 547.0920505895.

The spelling of 163749964 in words is "one hundred sixty-three million, seven hundred forty-nine thousand, nine hundred sixty-four".