169159740 has 24 divisors (see below), whose sum is σ = 473647440. Its totient is φ = 45109248.

The previous prime is 169159709. The next prime is 169159787. The reversal of 169159740 is 47951961.

It is a nialpdrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 169159692 and 169159701.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1409605 + ... + 1409724.

It is an arithmetic number, because the mean of its divisors is an integer number (19735310).

Almost surely, 2^169159740 is an apocalyptic number.

169159740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

169159740 is an abundant number, since it is smaller than the sum of its proper divisors (304487700).

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

169159740 is a wasteful number, since it uses less digits than its factorization.

169159740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2819341 (or 2819339 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 42.

The square root of 169159740 is about 13006.1423950378. The cubic root of 169159740 is about 553.0516210871.

The spelling of 169159740 in words is "one hundred sixty-nine million, one hundred fifty-nine thousand, seven hundred forty".