1298961874 has 36 divisors (see below), whose sum is σ = 2402603694. Its totient is φ = 523357632.

The previous prime is 1298961871. The next prime is 1298961883. The reversal of 1298961874 is 4781698921.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 955119025 + 343842849 = 30905^2 + 18543^2 .

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1298961871) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1470637 + ... + 1471519.

Almost surely, 2^1298961874 is an apocalyptic number.

1298961874 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1298961874 is a deficient number, since it is larger than the sum of its proper divisors (1103641820).

1298961874 is an frugal number, since it uses more digits than its factorization.

1298961874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1799 (or 909 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 55.

The square root of 1298961874 is about 36041.1136620388. The cubic root of 1298961874 is about 1091.1022920222.

The spelling of 1298961874 in words is "one billion, two hundred ninety-eight million, nine hundred sixty-one thousand, eight hundred seventy-four".