349361881 has 16 divisors (see below), whose sum is σ = 408451968. Its totient is φ = 295574400.

The previous prime is 349361839. The next prime is 349361891. The reversal of 349361881 is 188163943.

It is not a de Polignac number, because 349361881 - 2²⁵ = 315807449 is a prime.

It is a super-2 number, since 2×349361881² = 244107447791716322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (349361891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9300 + ... + 28021.

It is an arithmetic number, because the mean of its divisors is an integer number (25528248).

Almost surely, 2^349361881 is an apocalyptic number.

It is an amenable number.

349361881 is a deficient number, since it is larger than the sum of its proper divisors (59090087).

349361881 is a wasteful number, since it uses less digits than its factorization.

349361881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37392.

The product of its digits is 124416, while the sum is 43.

The square root of 349361881 is about 18691.2247057276. The cubic root of 349361881 is about 704.3013254948.

The spelling of 349361881 in words is "three hundred forty-nine million, three hundred sixty-one thousand, eight hundred eighty-one".