1493748641 has 16 divisors (see below), whose sum is σ = 1867235328. Its totient is φ = 1160898000.

The previous prime is 1493748637. The next prime is 1493748647. The reversal of 1493748641 is 1468473941.

It is a cyclic number.

It is not a de Polignac number, because 1493748641 - 2² = 1493748637 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1493748647) by changing a digit.

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, 4166 + ... + 54816.

It is an arithmetic number, because the mean of its divisors is an integer number (116702208).

Almost surely, 2^1493748641 is an apocalyptic number.

1493748641 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1493748641 is a deficient number, since it is larger than the sum of its proper divisors (373486687).

1493748641 is a wasteful number, since it uses less digits than its factorization.

1493748641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51052.

The product of its digits is 580608, while the sum is 47.

The square root of 1493748641 is about 38649.0445030663. The cubic root of 1493748641 is about 1143.1218016998.

The spelling of 1493748641 in words is "one billion, four hundred ninety-three million, seven hundred forty-eight thousand, six hundred forty-one".