1600690091 has 24 divisors (see below), whose sum is σ = 2161004544. Its totient is φ = 1151336160.

The previous prime is 1600690079. The next prime is 1600690103. The reversal of 1600690091 is 1900960061.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1600690079) and next prime (1600690103).

It is not a de Polignac number, because 1600690091 - 2⁶ = 1600690027 is a prime.

1600690091 is a strobogrammatic number because it is the same when read upside-down.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1600696091) 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 in 23 ways as a sum of consecutive naturals, for example, 48491 + ... + 74516.

It is an arithmetic number, because the mean of its divisors is an integer number (90041856).

Almost surely, 2^1600690091 is an apocalyptic number.

1600690091 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1600690091 is a deficient number, since it is larger than the sum of its proper divisors (560314453).

1600690091 is a wasteful number, since it uses less digits than its factorization.

1600690091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123051 (or 123038 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 32.

The square root of 1600690091 is about 40008.6252075724. The cubic root of 1600690091 is about 1169.7752243095.

The spelling of 1600690091 in words is "one billion, six hundred million, six hundred ninety thousand, ninety-one".