1604367091 has 2 divisors, whose sum is σ = 1604367092. Its totient is φ = 1604367090.

The previous prime is 1604367077. The next prime is 1604367113. The reversal of 1604367091 is 1907634061.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1604367091 - 2¹⁵ = 1604334323 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1604367091.

It is not a weakly prime, because it can be changed into another prime (1604347091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 802183545 + 802183546.

It is an arithmetic number, because the mean of its divisors is an integer number (802183546).

Almost surely, 2^1604367091 is an apocalyptic number.

1604367091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1604367091 is an equidigital number, since it uses as much as digits as its factorization.

1604367091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 1604367091 is about 40054.5514392559. The cubic root of 1604367091 is about 1170.6702495643.

The spelling of 1604367091 in words is "one billion, six hundred four million, three hundred sixty-seven thousand, ninety-one".