1990748958 has 16 divisors (see below), whose sum is σ = 4343452416. Its totient is φ = 603257240.

The previous prime is 1990748951. The next prime is 1990748989. The reversal of 1990748958 is 8598470991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1990748951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15081366 + ... + 15081497.

It is an arithmetic number, because the mean of its divisors is an integer number (271465776).

Almost surely, 2^1990748958 is an apocalyptic number.

1990748958 is an abundant number, since it is smaller than the sum of its proper divisors (2352703458).

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

1990748958 is a wasteful number, since it uses less digits than its factorization.

1990748958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30162879.

The product of its (nonzero) digits is 6531840, while the sum is 60.

The square root of 1990748958 is about 44617.8098745333. The cubic root of 1990748958 is about 1257.9754499082.

The spelling of 1990748958 in words is "one billion, nine hundred ninety million, seven hundred forty-eight thousand, nine hundred fifty-eight".