1915957469087 has 2 divisors, whose sum is σ = 1915957469088. Its totient is φ = 1915957469086.

The previous prime is 1915957469059. The next prime is 1915957469123. The reversal of 1915957469087 is 7809647595191.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1915957469087 - 2¹⁶ = 1915957403551 is a prime.

It is a super-2 number, since 2×1915957469087² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1915957469087.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1915957469017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 957978734543 + 957978734544.

It is an arithmetic number, because the mean of its divisors is an integer number (957978734544).

Almost surely, 2^{1915957469087} is an apocalyptic number.

1915957469087 is a deficient number, since it is larger than the sum of its proper divisors (1).

1915957469087 is an equidigital number, since it uses as much as digits as its factorization.

1915957469087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 171460800, while the sum is 71.

The spelling of 1915957469087 in words is "one trillion, nine hundred fifteen billion, nine hundred fifty-seven million, four hundred sixty-nine thousand, eighty-seven".