1945172845460 has 48 divisors (see below), whose sum is σ = 4404390186000. Its totient is φ = 717351220224.

The previous prime is 1945172845459. The next prime is 1945172845493. The reversal of 1945172845460 is 645482715491.

It can be written as a sum of positive squares in 8 ways, for example, as 24365336836 + 1920807508624 = 156094^2 + 1385932^2 .

It is a super-2 number, since 2×1945172845460² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1945172845396 and 1945172845405.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4296785 + ... + 4727864.

It is an arithmetic number, because the mean of its divisors is an integer number (91758128875).

Almost surely, 2^{1945172845460} is an apocalyptic number.

1945172845460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1945172845460 is an abundant number, since it is smaller than the sum of its proper divisors (2459217340540).

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

1945172845460 is a wasteful number, since it uses less digits than its factorization.

1945172845460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9025500 (or 9025498 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 56.

The spelling of 1945172845460 in words is "one trillion, nine hundred forty-five billion, one hundred seventy-two million, eight hundred forty-five thousand, four hundred sixty".