1945624141 has 2 divisors, whose sum is σ = 1945624142. Its totient is φ = 1945624140.

The previous prime is 1945624129. The next prime is 1945624159. The reversal of 1945624141 is 1414265491.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1788021225 + 157602916 = 42285^2 + 12554^2 .

It is an emirp because it is prime and its reverse (1414265491) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1945624141 - 2⁷ = 1945624013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1945624141.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1945684141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 972812070 + 972812071.

It is an arithmetic number, because the mean of its divisors is an integer number (972812071).

Almost surely, 2^1945624141 is an apocalyptic number.

It is an amenable number.

1945624141 is a deficient number, since it is larger than the sum of its proper divisors (1).

1945624141 is an equidigital number, since it uses as much as digits as its factorization.

1945624141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 37.

The square root of 1945624141 is about 44109.2296577485. The cubic root of 1945624141 is about 1248.3977638957.

The spelling of 1945624141 in words is "one billion, nine hundred forty-five million, six hundred twenty-four thousand, one hundred forty-one".