2147734391 has 12 divisors (see below), whose sum is σ = 2362185336. Its totient is φ = 1951284720.

The previous prime is 2147734367. The next prime is 2147734399. The reversal of 2147734391 is 1934377412.

It is a de Polignac number, because none of the positive numbers 2^k-2147734391 is a prime.

It is a super-2 number, since 2×2147734391² = 9225526028568281762, 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 (2147734399) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 235961 + ... + 244893.

It is an arithmetic number, because the mean of its divisors is an integer number (196848778).

Almost surely, 2^2147734391 is an apocalyptic number.

2147734391 is a deficient number, since it is larger than the sum of its proper divisors (214450945).

2147734391 is a wasteful number, since it uses less digits than its factorization.

2147734391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10942 (or 10931 counting only the distinct ones).

The product of its digits is 127008, while the sum is 41.

The square root of 2147734391 is about 46343.6553478467. The cubic root of 2147734391 is about 1290.2093666950.

The spelling of 2147734391 in words is "two billion, one hundred forty-seven million, seven hundred thirty-four thousand, three hundred ninety-one".