1953158131950 has 48 divisors (see below), whose sum is σ = 4851918921600. Its totient is φ = 519972625120.

The previous prime is 1953158131931. The next prime is 1953158131993. The reversal of 1953158131950 is 591318513591.

It is a super-2 number, since 2×1953158131950² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1953158131893 and 1953158131902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10779144 + ... + 10958843.

It is an arithmetic number, because the mean of its divisors is an integer number (101081644200).

Almost surely, 2^{1953158131950} is an apocalyptic number.

1953158131950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1953158131950 is an abundant number, since it is smaller than the sum of its proper divisors (2898760789650).

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

1953158131950 is a wasteful number, since it uses less digits than its factorization.

1953158131950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21738601 (or 21738596 counting only the distinct ones).

The product of its (nonzero) digits is 729000, while the sum is 51.

The spelling of 1953158131950 in words is "one trillion, nine hundred fifty-three billion, one hundred fifty-eight million, one hundred thirty-one thousand, nine hundred fifty".