7126988190 has 128 divisors (see below), whose sum is σ = 20035952640. Its totient is φ = 1588828800.

The previous prime is 7126988171. The next prime is 7126988201. The reversal of 7126988190 is 918896217.

It is a super-2 number, since 2×7126988190² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1620895 + ... + 1625285.

It is an arithmetic number, because the mean of its divisors is an integer number (156530880).

Almost surely, 2^7126988190 is an apocalyptic number.

7126988190 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 7126988190, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10017976320).

7126988190 is an abundant number, since it is smaller than the sum of its proper divisors (12908964450).

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

7126988190 is a wasteful number, since it uses less digits than its factorization.

7126988190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4598.

The product of its (nonzero) digits is 435456, while the sum is 51.

The square root of 7126988190 is about 84421.4912803606. The cubic root of 7126988190 is about 1924.4295326528.

The spelling of 7126988190 in words is "seven billion, one hundred twenty-six million, nine hundred eighty-eight thousand, one hundred ninety".