1293489790 has 16 divisors (see below), whose sum is σ = 2450823120. Its totient is φ = 490164480.

The previous prime is 1293489779. The next prime is 1293489803. The reversal of 1293489790 is 979843921.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3403731 + ... + 3404110.

It is an arithmetic number, because the mean of its divisors is an integer number (153176445).

Almost surely, 2^1293489790 is an apocalyptic number.

1293489790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1293489790 is a deficient number, since it is larger than the sum of its proper divisors (1157333330).

1293489790 is a wasteful number, since it uses less digits than its factorization.

1293489790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6807867.

The product of its (nonzero) digits is 979776, while the sum is 52.

The square root of 1293489790 is about 35965.1190739027. The cubic root of 1293489790 is about 1089.5679880443.

The spelling of 1293489790 in words is "one billion, two hundred ninety-three million, four hundred eighty-nine thousand, seven hundred ninety".