1396516091 has 2 divisors, whose sum is σ = 1396516092. Its totient is φ = 1396516090.

The previous prime is 1396516057. The next prime is 1396516097. The reversal of 1396516091 is 1906156931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1396516091 - 2²² = 1392321787 is a prime.

It is not a weakly prime, because it can be changed into another prime (1396516097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 698258045 + 698258046.

It is an arithmetic number, because the mean of its divisors is an integer number (698258046).

Almost surely, 2^1396516091 is an apocalyptic number.

1396516091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1396516091 is an equidigital number, since it uses as much as digits as its factorization.

1396516091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43740, while the sum is 41.

The square root of 1396516091 is about 37369.9891758079. The cubic root of 1396516091 is about 1117.7602164003.

The spelling of 1396516091 in words is "one billion, three hundred ninety-six million, five hundred sixteen thousand, ninety-one".