1958264490 has 128 divisors (see below), whose sum is σ = 5866463232. Its totient is φ = 407312640.

The previous prime is 1958264453. The next prime is 1958264491. The reversal of 1958264490 is 944628591.

It is not an unprimeable number, because it can be changed into a prime (1958264491) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 188779 + ... + 198881.

It is an arithmetic number, because the mean of its divisors is an integer number (45831744).

Almost surely, 2^1958264490 is an apocalyptic number.

1958264490 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 1958264490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2933231616).

1958264490 is an abundant number, since it is smaller than the sum of its proper divisors (3908198742).

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

1958264490 is a wasteful number, since it uses less digits than its factorization.

1958264490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10204.

The product of its (nonzero) digits is 622080, while the sum is 48.

The square root of 1958264490 is about 44252.2823140231. The cubic root of 1958264490 is about 1251.0954642194.

The spelling of 1958264490 in words is "one billion, nine hundred fifty-eight million, two hundred sixty-four thousand, four hundred ninety".