1911034987 has 2 divisors, whose sum is σ = 1911034988. Its totient is φ = 1911034986.

The previous prime is 1911034981. The next prime is 1911035053. The reversal of 1911034987 is 7894301191.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1911034987 - 2²³ = 1902646379 is a prime.

It is not a weakly prime, because it can be changed into another prime (1911034981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 955517493 + 955517494.

It is an arithmetic number, because the mean of its divisors is an integer number (955517494).

Almost surely, 2^1911034987 is an apocalyptic number.

1911034987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1911034987 is an equidigital number, since it uses as much as digits as its factorization.

1911034987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 43.

The square root of 1911034987 is about 43715.3861586513. The cubic root of 1911034987 is about 1240.9555128663.

The spelling of 1911034987 in words is "one billion, nine hundred eleven million, thirty-four thousand, nine hundred eighty-seven".