1293620889 has 16 divisors (see below), whose sum is σ = 1927525824. Its totient is φ = 764889600.

The previous prime is 1293620863. The next prime is 1293620897. The reversal of 1293620889 is 9880263921.

It is not a de Polignac number, because 1293620889 - 2⁸ = 1293620633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1293620849) 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, 476704 + ... + 479409.

It is an arithmetic number, because the mean of its divisors is an integer number (120470364).

Almost surely, 2^1293620889 is an apocalyptic number.

It is an amenable number.

1293620889 is a deficient number, since it is larger than the sum of its proper divisors (633904935).

1293620889 is a wasteful number, since it uses less digits than its factorization.

1293620889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 956168.

The product of its (nonzero) digits is 373248, while the sum is 48.

The square root of 1293620889 is about 35966.9416130980. The cubic root of 1293620889 is about 1089.6047971090.

The spelling of 1293620889 in words is "one billion, two hundred ninety-three million, six hundred twenty thousand, eight hundred eighty-nine".