1611401149 has 2 divisors, whose sum is σ = 1611401150. Its totient is φ = 1611401148.

The previous prime is 1611401123. The next prime is 1611401237. The reversal of 1611401149 is 9411041161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1599200100 + 12201049 = 39990^2 + 3493^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1611401149 is a prime.

It is a super-3 number, since 3×1611401149³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1611401249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 805700574 + 805700575.

It is an arithmetic number, because the mean of its divisors is an integer number (805700575).

Almost surely, 2^1611401149 is an apocalyptic number.

It is an amenable number.

1611401149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1611401149 is an equidigital number, since it uses as much as digits as its factorization.

1611401149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 1611401149 is about 40142.2613837337. The cubic root of 1611401149 is about 1172.3786194650.

The spelling of 1611401149 in words is "one billion, six hundred eleven million, four hundred one thousand, one hundred forty-nine".