163349780 has 24 divisors (see below), whose sum is σ = 374220000. Its totient is φ = 59399840.

The previous prime is 163349777. The next prime is 163349789. The reversal of 163349780 is 87943361.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163349789) 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, 371030 + ... + 371469.

It is an arithmetic number, because the mean of its divisors is an integer number (15592500).

Almost surely, 2^163349780 is an apocalyptic number.

163349780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163349780 is an abundant number, since it is smaller than the sum of its proper divisors (210870220).

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

163349780 is a wasteful number, since it uses less digits than its factorization.

163349780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742519 (or 742517 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 163349780 is about 12780.8364358519. The cubic root of 163349780 is about 546.6460126707.

It can be divided in two parts, 163 and 349780, that added together give a palindrome (349943).

The spelling of 163349780 in words is "one hundred sixty-three million, three hundred forty-nine thousand, seven hundred eighty".