1395162491 has 2 divisors, whose sum is σ = 1395162492. Its totient is φ = 1395162490.

The previous prime is 1395162481. The next prime is 1395162499. The reversal of 1395162491 is 1942615931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1395162491 - 2¹⁸ = 1394900347 is a prime.

It is not a weakly prime, because it can be changed into another prime (1395162499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 697581245 + 697581246.

It is an arithmetic number, because the mean of its divisors is an integer number (697581246).

Almost surely, 2^1395162491 is an apocalyptic number.

1395162491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1395162491 is an equidigital number, since it uses as much as digits as its factorization.

1395162491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58320, while the sum is 41.

The square root of 1395162491 is about 37351.8739958252. The cubic root of 1395162491 is about 1117.3989628167.

The spelling of 1395162491 in words is "one billion, three hundred ninety-five million, one hundred sixty-two thousand, four hundred ninety-one".