1493907538 has 32 divisors (see below), whose sum is σ = 2432021760. Its totient is φ = 685651200.

The previous prime is 1493907511. The next prime is 1493907559. The reversal of 1493907538 is 8357093941.

It is a junction number, because it is equal to n+sod(n) for n = 1493907491 and 1493907500.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 219588 + ... + 226288.

It is an arithmetic number, because the mean of its divisors is an integer number (76000680).

Almost surely, 2^1493907538 is an apocalyptic number.

1493907538 is a deficient number, since it is larger than the sum of its proper divisors (938114222).

1493907538 is a wasteful number, since it uses less digits than its factorization.

1493907538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6882.

The product of its (nonzero) digits is 816480, while the sum is 49.

The square root of 1493907538 is about 38651.1000878371. The cubic root of 1493907538 is about 1143.1623333260.

The spelling of 1493907538 in words is "one billion, four hundred ninety-three million, nine hundred seven thousand, five hundred thirty-eight".