1258560787 has 8 divisors (see below), whose sum is σ = 1373716080. Its totient is φ = 1143528960.

The previous prime is 1258560781. The next prime is 1258560791. The reversal of 1258560787 is 7870658521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1258560787 is a prime.

It is a super-4 number, since 4×1258560787⁴ (a number of 38 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1258560787.

It is not an unprimeable number, because it can be changed into a prime (1258560781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8862 + ... + 50947.

It is an arithmetic number, because the mean of its divisors is an integer number (171714510).

Almost surely, 2^1258560787 is an apocalyptic number.

1258560787 is a deficient number, since it is larger than the sum of its proper divisors (115155293).

1258560787 is a wasteful number, since it uses less digits than its factorization.

1258560787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61733.

The product of its (nonzero) digits is 940800, while the sum is 49.

The square root of 1258560787 is about 35476.2002897717. The cubic root of 1258560787 is about 1079.6709065316.

The spelling of 1258560787 in words is "one billion, two hundred fifty-eight million, five hundred sixty thousand, seven hundred eighty-seven".