101981394 has 24 divisors (see below), whose sum is σ = 222124032. Its totient is φ = 33814680.

The previous prime is 101981387. The next prime is 101981401. The reversal of 101981394 is 493189101.

It is an interprime number because it is at equal distance from previous prime (101981387) and next prime (101981401).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11394 + ... + 18269.

It is an arithmetic number, because the mean of its divisors is an integer number (9255168).

Almost surely, 2^101981394 is an apocalyptic number.

101981394 is an abundant number, since it is smaller than the sum of its proper divisors (120142638).

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

101981394 is a wasteful number, since it uses less digits than its factorization.

101981394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29862 (or 29859 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 101981394 is about 10098.5837620926. The cubic root of 101981394 is about 467.2044615170.

The spelling of 101981394 in words is "one hundred one million, nine hundred eighty-one thousand, three hundred ninety-four".