1945139563126 has 8 divisors (see below), whose sum is σ = 2961257245560. Its totient is φ = 958053814608.

The previous prime is 1945139563043. The next prime is 1945139563141. The reversal of 1945139563126 is 6213659315491.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1945139563126² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7257983311 + ... + 7257983578.

It is an arithmetic number, because the mean of its divisors is an integer number (370157155695).

Almost surely, 2^{1945139563126} is an apocalyptic number.

1945139563126 is a deficient number, since it is larger than the sum of its proper divisors (1016117682434).

1945139563126 is a wasteful number, since it uses less digits than its factorization.

1945139563126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14515966958.

The product of its digits is 5248800, while the sum is 55.

The spelling of 1945139563126 in words is "one trillion, nine hundred forty-five billion, one hundred thirty-nine million, five hundred sixty-three thousand, one hundred twenty-six".