156443941 has 2 divisors, whose sum is σ = 156443942. Its totient is φ = 156443940.

The previous prime is 156443939. The next prime is 156443957. The reversal of 156443941 is 149344651.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119793025 + 36650916 = 10945^2 + 6054^2 .

It is a cyclic number.

It is not a de Polignac number, because 156443941 - 2¹ = 156443939 is a prime.

It is a super-2 number, since 2×156443941² = 48949413351222962, which contains 22 as substring.

Together with 156443939, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 156443941.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (156443921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78221970 + 78221971.

It is an arithmetic number, because the mean of its divisors is an integer number (78221971).

Almost surely, 2^156443941 is an apocalyptic number.

It is an amenable number.

156443941 is a deficient number, since it is larger than the sum of its proper divisors (1).

156443941 is an equidigital number, since it uses as much as digits as its factorization.

156443941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 37.

The square root of 156443941 is about 12507.7552342537. The cubic root of 156443941 is about 538.8314247547.

The spelling of 156443941 in words is "one hundred fifty-six million, four hundred forty-three thousand, nine hundred forty-one".