3434881981 has 4 divisors (see below), whose sum is σ = 3435067872. Its totient is φ = 3434696092.

The previous prime is 3434881913. The next prime is 3434881999. The reversal of 3434881981 is 1891884343.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3434881981 - 2⁹ = 3434881469 is a prime.

It is a super-2 number, since 2×3434881981² = 23596828446796968722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3434881181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61735 + ... + 103348.

It is an arithmetic number, because the mean of its divisors is an integer number (858766968).

Almost surely, 2^3434881981 is an apocalyptic number.

It is an amenable number.

3434881981 is a deficient number, since it is larger than the sum of its proper divisors (185891).

3434881981 is a wasteful number, since it uses less digits than its factorization.

3434881981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185890.

The product of its digits is 663552, while the sum is 49.

The square root of 3434881981 is about 58607.8662041197. The cubic root of 3434881981 is about 1508.8194478560.

The spelling of 3434881981 in words is "three billion, four hundred thirty-four million, eight hundred eighty-one thousand, nine hundred eighty-one".