1722150990 has 256 divisors, whose sum is σ = 5532364800. Its totient is φ = 372708864.

The previous prime is 1722150973. The next prime is 1722151007. The reversal of 1722150990 is 990512271.

It is an interprime number because it is at equal distance from previous prime (1722150973) and next prime (1722151007).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 7520196 + ... + 7520424.

It is an arithmetic number, because the mean of its divisors is an integer number (21610800).

Almost surely, 2^1722150990 is an apocalyptic number.

1722150990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1722150990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2766182400).

1722150990 is an abundant number, since it is smaller than the sum of its proper divisors (3810213810).

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

1722150990 is a wasteful number, since it uses less digits than its factorization.

1722150990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448 (or 442 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 36.

The square root of 1722150990 is about 41498.8070912888. The cubic root of 1722150990 is about 1198.6445319986.

The spelling of 1722150990 in words is "one billion, seven hundred twenty-two million, one hundred fifty thousand, nine hundred ninety".