2049543631 has 2 divisors, whose sum is σ = 2049543632. Its totient is φ = 2049543630.

The previous prime is 2049543607. The next prime is 2049543637. The reversal of 2049543631 is 1363459402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2049543631 - 2¹¹ = 2049541583 is a prime.

It is a super-2 number, since 2×2049543631² = 8401258190745328322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2049543637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1024771815 + 1024771816.

It is an arithmetic number, because the mean of its divisors is an integer number (1024771816).

Almost surely, 2^2049543631 is an apocalyptic number.

2049543631 is a deficient number, since it is larger than the sum of its proper divisors (1).

2049543631 is an equidigital number, since it uses as much as digits as its factorization.

2049543631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 2049543631 is about 45271.8856576573. The cubic root of 2049543631 is about 1270.2398189310.

The spelling of 2049543631 in words is "two billion, forty-nine million, five hundred forty-three thousand, six hundred thirty-one".