1298693790 has 32 divisors (see below), whose sum is σ = 3463184160. Its totient is φ = 346318272.

The previous prime is 1298693729. The next prime is 1298693791. The reversal of 1298693790 is 973968921.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1298693791) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2404719 + ... + 2405258.

It is an arithmetic number, because the mean of its divisors is an integer number (108224505).

Almost surely, 2^1298693790 is an apocalyptic number.

1298693790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1298693790 is an abundant number, since it is smaller than the sum of its proper divisors (2164490370).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1298693790 is a wasteful number, since it uses less digits than its factorization.

1298693790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4809993 (or 4809987 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 54.

The square root of 1298693790 is about 36037.3943286692. The cubic root of 1298693790 is about 1091.0272251046.

The spelling of 1298693790 in words is "one billion, two hundred ninety-eight million, six hundred ninety-three thousand, seven hundred ninety".