1602135091 has 2 divisors, whose sum is σ = 1602135092. Its totient is φ = 1602135090.

The previous prime is 1602135079. The next prime is 1602135133. The reversal of 1602135091 is 1905312061.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1602135091 - 2²¹ = 1600037939 is a prime.

It is not a weakly prime, because it can be changed into another prime (1602135001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 801067545 + 801067546.

It is an arithmetic number, because the mean of its divisors is an integer number (801067546).

Almost surely, 2^1602135091 is an apocalyptic number.

1602135091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1602135091 is an equidigital number, since it uses as much as digits as its factorization.

1602135091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 1602135091 is about 40026.6797398935. The cubic root of 1602135091 is about 1170.1271177053.

The spelling of 1602135091 in words is "one billion, six hundred two million, one hundred thirty-five thousand, ninety-one".