1494381831 has 4 divisors (see below), whose sum is σ = 1992509112. Its totient is φ = 996254552.

The previous prime is 1494381827. The next prime is 1494381841. The reversal of 1494381831 is 1381834941.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1494381831 - 2² = 1494381827 is a prime.

It is a super-2 number, since 2×1494381831² = 4466354113645825122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1494381841) 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, 249063636 + ... + 249063641.

It is an arithmetic number, because the mean of its divisors is an integer number (498127278).

Almost surely, 2^1494381831 is an apocalyptic number.

1494381831 is a deficient number, since it is larger than the sum of its proper divisors (498127281).

1494381831 is an equidigital number, since it uses as much as digits as its factorization.

1494381831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498127280.

The product of its digits is 82944, while the sum is 42.

The square root of 1494381831 is about 38657.2351701464. The cubic root of 1494381831 is about 1143.2832994299.

The spelling of 1494381831 in words is "one billion, four hundred ninety-four million, three hundred eighty-one thousand, eight hundred thirty-one".