161538034 has 16 divisors (see below), whose sum is σ = 277358400. Its totient is φ = 69121584.

The previous prime is 161538023. The next prime is 161538037. The reversal of 161538034 is 430835161.

It is a junction number, because it is equal to n+sod(n) for n = 161537987 and 161538005.

It is not an unprimeable number, because it can be changed into a prime (161538037) 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, 472 + ... + 17980.

It is an arithmetic number, because the mean of its divisors is an integer number (17334900).

Almost surely, 2^161538034 is an apocalyptic number.

161538034 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

161538034 is a deficient number, since it is larger than the sum of its proper divisors (115820366).

161538034 is a wasteful number, since it uses less digits than its factorization.

161538034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18177.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 161538034 is about 12709.7613667606. The cubic root of 161538034 is about 544.6175067797.

The spelling of 161538034 in words is "one hundred sixty-one million, five hundred thirty-eight thousand, thirty-four".