1260187975 has 24 divisors (see below), whose sum is σ = 1623471488. Its totient is φ = 969321600.

The previous prime is 1260187949. The next prime is 1260187987. The reversal of 1260187975 is 5797810621.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-1260187975 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 116497 + ... + 126853.

Almost surely, 2^1260187975 is an apocalyptic number.

1260187975 is a deficient number, since it is larger than the sum of its proper divisors (363283513).

1260187975 is a wasteful number, since it uses less digits than its factorization.

1260187975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10555 (or 10550 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 46.

The square root of 1260187975 is about 35499.1263977017. The cubic root of 1260187975 is about 1080.1360068200.

It can be divided in two parts, 12601 and 87975, that added together give a triangular number (100576 = T₄₄₈).

The spelling of 1260187975 in words is "one billion, two hundred sixty million, one hundred eighty-seven thousand, nine hundred seventy-five".