1912109651 has 2 divisors, whose sum is σ = 1912109652. Its totient is φ = 1912109650.

The previous prime is 1912109611. The next prime is 1912109653. The reversal of 1912109651 is 1569012191.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1912109651 is a prime.

Together with 1912109653, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1912109653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 956054825 + 956054826.

It is an arithmetic number, because the mean of its divisors is an integer number (956054826).

Almost surely, 2^1912109651 is an apocalyptic number.

1912109651 is a deficient number, since it is larger than the sum of its proper divisors (1).

1912109651 is an equidigital number, since it uses as much as digits as its factorization.

1912109651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4860, while the sum is 35.

The square root of 1912109651 is about 43727.6760301757. The cubic root of 1912109651 is about 1241.1880849749.

The spelling of 1912109651 in words is "one billion, nine hundred twelve million, one hundred nine thousand, six hundred fifty-one".