1611991484 has 6 divisors (see below), whose sum is σ = 2820985104. Its totient is φ = 805995740.

The previous prime is 1611991471. The next prime is 1611991499. The reversal of 1611991484 is 4841991161.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201498932 + ... + 201498939.

It is an arithmetic number, because the mean of its divisors is an integer number (470164184).

Almost surely, 2^1611991484 is an apocalyptic number.

It is an amenable number.

1611991484 is a deficient number, since it is larger than the sum of its proper divisors (1208993620).

1611991484 is a wasteful number, since it uses less digits than its factorization.

1611991484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402997875 (or 402997873 counting only the distinct ones).

The product of its digits is 62208, while the sum is 44.

The square root of 1611991484 is about 40149.6137465854. The cubic root of 1611991484 is about 1172.5217685155.

The spelling of 1611991484 in words is "one billion, six hundred eleven million, nine hundred ninety-one thousand, four hundred eighty-four".