1949094731 has 4 divisors (see below), whose sum is σ = 1949184000. Its totient is φ = 1949005464.

The previous prime is 1949094709. The next prime is 1949094733. The reversal of 1949094731 is 1374909491.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1949094731 - 2¹⁴ = 1949078347 is a prime.

It is a super-2 number, since 2×1949094731² = 7597940540823924722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1949094733) 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, 12470 + ... + 63668.

It is an arithmetic number, because the mean of its divisors is an integer number (487296000).

Almost surely, 2^1949094731 is an apocalyptic number.

1949094731 is a deficient number, since it is larger than the sum of its proper divisors (89269).

1949094731 is an equidigital number, since it uses as much as digits as its factorization.

1949094731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89268.

The product of its (nonzero) digits is 244944, while the sum is 47.

The square root of 1949094731 is about 44148.5529887447. The cubic root of 1949094731 is about 1249.1396172090.

The spelling of 1949094731 in words is "one billion, nine hundred forty-nine million, ninety-four thousand, seven hundred thirty-one".