361881954 has 72 divisors (see below), whose sum is σ = 951799680. Its totient is φ = 98893872.

The previous prime is 361881943. The next prime is 361881983. The reversal of 361881954 is 459188163.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 11367 + ... + 29205.

It is an arithmetic number, because the mean of its divisors is an integer number (13219440).

Almost surely, 2^361881954 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 361881954, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (475899840).

361881954 is an abundant number, since it is smaller than the sum of its proper divisors (589917726).

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

361881954 is a wasteful number, since it uses less digits than its factorization.

361881954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17884 (or 17874 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 361881954 is about 19023.1951574913. The cubic root of 361881954 is about 712.6161199478.

The spelling of 361881954 in words is "three hundred sixty-one million, eight hundred eighty-one thousand, nine hundred fifty-four".