1493376997 has 4 divisors (see below), whose sum is σ = 1706716576. Its totient is φ = 1280037420.

The previous prime is 1493376979. The next prime is 1493377007. The reversal of 1493376997 is 7996733941.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1493376997 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 (1493376947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106669779 + ... + 106669792.

It is an arithmetic number, because the mean of its divisors is an integer number (426679144).

Almost surely, 2^1493376997 is an apocalyptic number.

It is an amenable number.

1493376997 is a deficient number, since it is larger than the sum of its proper divisors (213339579).

1493376997 is an equidigital number, since it uses as much as digits as its factorization.

1493376997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213339578.

The product of its digits is 7715736, while the sum is 58.

The square root of 1493376997 is about 38644.2362714028. The cubic root of 1493376997 is about 1143.0269911038.

The spelling of 1493376997 in words is "one billion, four hundred ninety-three million, three hundred seventy-six thousand, nine hundred ninety-seven".