1913773087 has 2 divisors, whose sum is σ = 1913773088. Its totient is φ = 1913773086.

The previous prime is 1913773061. The next prime is 1913773109. The reversal of 1913773087 is 7803773191.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1913773087 - 2²³ = 1905384479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1913773027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 956886543 + 956886544.

It is an arithmetic number, because the mean of its divisors is an integer number (956886544).

Almost surely, 2^1913773087 is an apocalyptic number.

1913773087 is a deficient number, since it is larger than the sum of its proper divisors (1).

1913773087 is an equidigital number, since it uses as much as digits as its factorization.

1913773087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 222264, while the sum is 46.

The square root of 1913773087 is about 43746.6922978184. The cubic root of 1913773087 is about 1241.5479036918.

The spelling of 1913773087 in words is "one billion, nine hundred thirteen million, seven hundred seventy-three thousand, eighty-seven".