618941 has 2 divisors, whose sum is σ = 618942. Its totient is φ = 618940.

The previous prime is 618929. The next prime is 618971. The reversal of 618941 is 149816.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 606841 + 12100 = 779^2 + 110^2 .

It is a cyclic number.

It is not a de Polignac number, because 618941 - 2¹⁰ = 617917 is a prime.

It is a super-2 number, since 2×618941² = 766175922962, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (618971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309470 + 309471.

It is an arithmetic number, because the mean of its divisors is an integer number (309471).

2⁶¹⁸⁹⁴¹ is an apocalyptic number.

It is an amenable number.

618941 is a deficient number, since it is larger than the sum of its proper divisors (1).

618941 is an equidigital number, since it uses as much as digits as its factorization.

618941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 29.

The square root of 618941 is about 786.7280343295. The cubic root of 618941 is about 85.2216131698.

The spelling of 618941 in words is "six hundred eighteen thousand, nine hundred forty-one".