1245346887 has 32 divisors (see below), whose sum is σ = 1787166720. Its totient is φ = 769033440.

The previous prime is 1245346853. The next prime is 1245346933. The reversal of 1245346887 is 7886435421.

1245346887 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1245346887 - 2⁸ = 1245346631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245346187) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 512758 + ... + 515180.

It is an arithmetic number, because the mean of its divisors is an integer number (55848960).

Almost surely, 2^1245346887 is an apocalyptic number.

1245346887 is a deficient number, since it is larger than the sum of its proper divisors (541819833).

1245346887 is a wasteful number, since it uses less digits than its factorization.

1245346887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2643.

The product of its digits is 1290240, while the sum is 48.

The square root of 1245346887 is about 35289.4727503827. The cubic root of 1245346887 is about 1075.8790392878.

It can be divided in two parts, 12453 and 46887, that added together give a triangular number (59340 = T₃₄₄).

The spelling of 1245346887 in words is "one billion, two hundred forty-five million, three hundred forty-six thousand, eight hundred eighty-seven".