1618952141 has 2 divisors, whose sum is σ = 1618952142. Its totient is φ = 1618952140.

The previous prime is 1618952089. The next prime is 1618952183. The reversal of 1618952141 is 1412598161.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1196814025 + 422138116 = 34595^2 + 20546^2 .

It is a cyclic number.

It is not a de Polignac number, because 1618952141 - 2¹⁴ = 1618935757 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1618952095 and 1618952104.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1618952341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 809476070 + 809476071.

It is an arithmetic number, because the mean of its divisors is an integer number (809476071).

Almost surely, 2^1618952141 is an apocalyptic number.

It is an amenable number.

1618952141 is a deficient number, since it is larger than the sum of its proper divisors (1).

1618952141 is an equidigital number, since it uses as much as digits as its factorization.

1618952141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 38.

The square root of 1618952141 is about 40236.2043562760. The cubic root of 1618952141 is about 1174.2070137033.

The spelling of 1618952141 in words is "one billion, six hundred eighteen million, nine hundred fifty-two thousand, one hundred forty-one".