103161438 has 40 divisors (see below), whose sum is σ = 234439920. Its totient is φ = 33899040.

The previous prime is 103161437. The next prime is 103161467. The reversal of 103161438 is 834161301.

103161438 is a `hidden beast` number, since 10 + 3 + 1 + 614 + 38 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103161437) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7018 + ... + 15986.

It is an arithmetic number, because the mean of its divisors is an integer number (5860998).

Almost surely, 2^103161438 is an apocalyptic number.

103161438 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 103161438, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117219960).

103161438 is an abundant number, since it is smaller than the sum of its proper divisors (131278482).

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

103161438 is an equidigital number, since it uses as much as digits as its factorization.

103161438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9054 (or 9045 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 103161438 is about 10156.8419304427. The cubic root of 103161438 is about 468.9995893208. Note that the first 3 decimals are identical.

The spelling of 103161438 in words is "one hundred three million, one hundred sixty-one thousand, four hundred thirty-eight".