1591098222 has 16 divisors (see below), whose sum is σ = 3636796032. Its totient is φ = 454599480.

The previous prime is 1591098217. The next prime is 1591098227. The reversal of 1591098222 is 2228901951.

It is an interprime number because it is at equal distance from previous prime (1591098217) and next prime (1591098227).

It is a super-2 number, since 2×1591098222² = 5063187104103122568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1591098227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18941604 + ... + 18941687.

It is an arithmetic number, because the mean of its divisors is an integer number (227299752).

Almost surely, 2^1591098222 is an apocalyptic number.

1591098222 is an abundant number, since it is smaller than the sum of its proper divisors (2045697810).

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

1591098222 is a wasteful number, since it uses less digits than its factorization.

1591098222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37883303.

The product of its (nonzero) digits is 25920, while the sum is 39.

The square root of 1591098222 is about 39888.5725741095. The cubic root of 1591098222 is about 1167.4339804354.

It can be divided in two parts, 159109 and 8222, that added together give a triangular number (167331 = T₅₇₈).

The spelling of 1591098222 in words is "one billion, five hundred ninety-one million, ninety-eight thousand, two hundred twenty-two".