1493251513 has 16 divisors (see below), whose sum is σ = 1678687696. Its totient is φ = 1319120640.

The previous prime is 1493251511. The next prime is 1493251531. The reversal of 1493251513 is 3151523941.

It can be written as a sum of positive squares in 8 ways, for example, as 542330944 + 950920569 = 23288^2 + 30837^2 .

It is a cyclic number.

It is not a de Polignac number, because 1493251513 - 2¹ = 1493251511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1493251511) 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, 3895 + ... + 54787.

It is an arithmetic number, because the mean of its divisors is an integer number (104917981).

Almost surely, 2^1493251513 is an apocalyptic number.

1493251513 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1493251513 is a deficient number, since it is larger than the sum of its proper divisors (185436183).

1493251513 is a wasteful number, since it uses less digits than its factorization.

1493251513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51004.

The product of its digits is 16200, while the sum is 34.

The square root of 1493251513 is about 38642.6126575313. The cubic root of 1493251513 is about 1142.9949751613.

The spelling of 1493251513 in words is "one billion, four hundred ninety-three million, two hundred fifty-one thousand, five hundred thirteen".