164749770 has 48 divisors (see below), whose sum is σ = 438321312. Its totient is φ = 42910560.

The previous prime is 164749751. The next prime is 164749799. The reversal of 164749770 is 77947461.

164749770 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17416 + ... + 25155.

It is an arithmetic number, because the mean of its divisors is an integer number (9131694).

Almost surely, 2^164749770 is an apocalyptic number.

164749770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

164749770 is an abundant number, since it is smaller than the sum of its proper divisors (273571542).

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

164749770 is a wasteful number, since it uses less digits than its factorization.

164749770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42627 (or 42624 counting only the distinct ones).

The product of its (nonzero) digits is 296352, while the sum is 45.

The square root of 164749770 is about 12835.4886934624. The cubic root of 164749770 is about 548.2032496817.

It can be divided in two parts, 16474 and 9770, that added together give a square (26244 = 162²).

The spelling of 164749770 in words is "one hundred sixty-four million, seven hundred forty-nine thousand, seven hundred seventy".