1950123690 has 96 divisors (see below), whose sum is σ = 5170164480. Its totient is φ = 509887872.

The previous prime is 1950123683. The next prime is 1950123709. The reversal of 1950123690 is 963210591.

It is a super-2 number, since 2×1950123690² = 7605964812598432200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1115397 + ... + 1117143.

It is an arithmetic number, because the mean of its divisors is an integer number (53855880).

Almost surely, 2^1950123690 is an apocalyptic number.

1950123690 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 1950123690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2585082240).

1950123690 is an abundant number, since it is smaller than the sum of its proper divisors (3220040790).

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

1950123690 is a wasteful number, since it uses less digits than its factorization.

1950123690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1996 (or 1993 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The square root of 1950123690 is about 44160.2048228946. The cubic root of 1950123690 is about 1249.3593922868.

The spelling of 1950123690 in words is "one billion, nine hundred fifty million, one hundred twenty-three thousand, six hundred ninety".