1950378123156 has 24 divisors (see below), whose sum is σ = 4551010279200. Its totient is φ = 650107756512.

The previous prime is 1950378123143. The next prime is 1950378123191. The reversal of 1950378123156 is 6513218730591.

It is a super-2 number, since 2×1950378123156² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1950378123099 and 1950378123108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1837606 + ... + 2697693.

It is an arithmetic number, because the mean of its divisors is an integer number (189625428300).

Almost surely, 2^{1950378123156} is an apocalyptic number.

It is an amenable number.

1950378123156 is an abundant number, since it is smaller than the sum of its proper divisors (2600632156044).

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

1950378123156 is a wasteful number, since it uses less digits than its factorization.

1950378123156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4571143 (or 4571141 counting only the distinct ones).

The product of its (nonzero) digits is 1360800, while the sum is 51.

The spelling of 1950378123156 in words is "one trillion, nine hundred fifty billion, three hundred seventy-eight million, one hundred twenty-three thousand, one hundred fifty-six".