1631553941 has 2 divisors, whose sum is σ = 1631553942. Its totient is φ = 1631553940.

The previous prime is 1631553929. The next prime is 1631553953. The reversal of 1631553941 is 1493551361.

It is a balanced prime because it is at equal distance from previous prime (1631553929) and next prime (1631553953).

It can be written as a sum of positive squares in only one way, i.e., 1480017841 + 151536100 = 38471^2 + 12310^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1631553941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1631553895 and 1631553904.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1631550941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 815776970 + 815776971.

It is an arithmetic number, because the mean of its divisors is an integer number (815776971).

Almost surely, 2^1631553941 is an apocalyptic number.

It is an amenable number.

1631553941 is a deficient number, since it is larger than the sum of its proper divisors (1).

1631553941 is an equidigital number, since it uses as much as digits as its factorization.

1631553941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48600, while the sum is 38.

The square root of 1631553941 is about 40392.4985733737. The cubic root of 1631553941 is about 1177.2457887068.

The spelling of 1631553941 in words is "one billion, six hundred thirty-one million, five hundred fifty-three thousand, nine hundred forty-one".