1290229922 has 8 divisors (see below), whose sum is σ = 2037205200. Its totient is φ = 611161524.

The previous prime is 1290229867. The next prime is 1290229949. The reversal of 1290229922 is 2299220921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (38), and also a Moran number because the ratio is a prime number: 33953419 = 1290229922 / (1 + 2 + 9 + 0 + 2 + 2 + 9 + 9 + 2 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16976672 + ... + 16976747.

It is an arithmetic number, because the mean of its divisors is an integer number (254650650).

Almost surely, 2^1290229922 is an apocalyptic number.

1290229922 is a deficient number, since it is larger than the sum of its proper divisors (746975278).

1290229922 is a wasteful number, since it uses less digits than its factorization.

1290229922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33953440.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 1290229922 is about 35919.7706284436. The cubic root of 1290229922 is about 1088.6519040693.

It can be divided in two parts, 12902 and 29922, that added together give a palindrome (42824).

The spelling of 1290229922 in words is "one billion, two hundred ninety million, two hundred twenty-nine thousand, nine hundred twenty-two".