1945461622987 has 4 divisors (see below), whose sum is σ = 1972111782280. Its totient is φ = 1918811463696.

The previous prime is 1945461622939. The next prime is 1945461622999. The reversal of 1945461622987 is 7892261645491.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1945461622987 - 2⁷ = 1945461622859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1945461628987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13325079537 + ... + 13325079682.

It is an arithmetic number, because the mean of its divisors is an integer number (493027945570).

Almost surely, 2^{1945461622987} is an apocalyptic number.

1945461622987 is a deficient number, since it is larger than the sum of its proper divisors (26650159293).

1945461622987 is an equidigital number, since it uses as much as digits as its factorization.

1945461622987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26650159292.

The product of its digits is 52254720, while the sum is 64.

The spelling of 1945461622987 in words is "one trillion, nine hundred forty-five billion, four hundred sixty-one million, six hundred twenty-two thousand, nine hundred eighty-seven".