1491795007 has 2 divisors, whose sum is σ = 1491795008. Its totient is φ = 1491795006.

The previous prime is 1491794981. The next prime is 1491795023. The reversal of 1491795007 is 7005971941.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1491795007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1491795047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 745897503 + 745897504.

It is an arithmetic number, because the mean of its divisors is an integer number (745897504).

Almost surely, 2^1491795007 is an apocalyptic number.

1491795007 is a deficient number, since it is larger than the sum of its proper divisors (1).

1491795007 is an equidigital number, since it uses as much as digits as its factorization.

1491795007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 79380, while the sum is 43.

The square root of 1491795007 is about 38623.7622067038. The cubic root of 1491795007 is about 1142.6232314443.

The spelling of 1491795007 in words is "one billion, four hundred ninety-one million, seven hundred ninety-five thousand, seven".