1222649590 has 8 divisors (see below), whose sum is σ = 2200769280. Its totient is φ = 489059832.

The previous prime is 1222649557. The next prime is 1222649627. The reversal of 1222649590 is 959462221.

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

It is a congruent number.

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, 61132470 + ... + 61132489.

It is an arithmetic number, because the mean of its divisors is an integer number (275096160).

Almost surely, 2^1222649590 is an apocalyptic number.

1222649590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1222649590 is a deficient number, since it is larger than the sum of its proper divisors (978119690).

1222649590 is a wasteful number, since it uses less digits than its factorization.

1222649590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122264966.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 1222649590 is about 34966.4065926140. The cubic root of 1222649590 is about 1069.3027133692.

It can be divided in two parts, 12226 and 49590, that added together give a palindrome (61816).

The spelling of 1222649590 in words is "one billion, two hundred twenty-two million, six hundred forty-nine thousand, five hundred ninety".