1945070187557 has 8 divisors (see below), whose sum is σ = 2222965909056. Its totient is φ = 1667181604032.

The previous prime is 1945070187551. The next prime is 1945070187581. The reversal of 1945070187557 is 7557810705491.

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

It is not a de Polignac number, because 1945070187557 - 2⁶ = 1945070187493 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1945070187496 and 1945070187505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1945070187551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1187243 + ... + 2302104.

It is an arithmetic number, because the mean of its divisors is an integer number (277870738632).

Almost surely, 2^{1945070187557} is an apocalyptic number.

It is an amenable number.

1945070187557 is a deficient number, since it is larger than the sum of its proper divisors (277895721499).

1945070187557 is an equidigital number, since it uses as much as digits as its factorization.

1945070187557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3568987.

The product of its (nonzero) digits is 12348000, while the sum is 59.

The spelling of 1945070187557 in words is "one trillion, nine hundred forty-five billion, seventy million, one hundred eighty-seven thousand, five hundred fifty-seven".