1493906791 has 16 divisors (see below), whose sum is σ = 1667967840. Its totient is φ = 1329108480.

The previous prime is 1493906779. The next prime is 1493906801. The reversal of 1493906791 is 1976093941.

It is not a de Polignac number, because 1493906791 - 2⁹ = 1493906279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1493900791) 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, 27355 + ... + 61123.

It is an arithmetic number, because the mean of its divisors is an integer number (104247990).

Almost surely, 2^1493906791 is an apocalyptic number.

1493906791 is a deficient number, since it is larger than the sum of its proper divisors (174061049).

1493906791 is a wasteful number, since it uses less digits than its factorization.

1493906791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33906.

The product of its (nonzero) digits is 367416, while the sum is 49.

The square root of 1493906791 is about 38651.0904244628. The cubic root of 1493906791 is about 1143.1621427871.

The spelling of 1493906791 in words is "one billion, four hundred ninety-three million, nine hundred six thousand, seven hundred ninety-one".