1331052494 has 32 divisors (see below), whose sum is σ = 2070360000. Its totient is φ = 641481984.

The previous prime is 1331052427. The next prime is 1331052497. The reversal of 1331052494 is 4942501331.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1331052494.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331052497) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1877012 + ... + 1877720.

It is an arithmetic number, because the mean of its divisors is an integer number (64698750).

Almost surely, 2^1331052494 is an apocalyptic number.

1331052494 is a deficient number, since it is larger than the sum of its proper divisors (739307506).

1331052494 is a wasteful number, since it uses less digits than its factorization.

1331052494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1052.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 1331052494 is about 36483.5921202943. The cubic root of 1331052494 is about 1100.0144609669.

The spelling of 1331052494 in words is "one billion, three hundred thirty-one million, fifty-two thousand, four hundred ninety-four".