1996149 has 8 divisors (see below), whose sum is σ = 2671200. Its totient is φ = 1325936.

The previous prime is 1996129. The next prime is 1996171. The reversal of 1996149 is 9416991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1996149 - 2¹¹ = 1994101 is a prime.

It is a super-2 number, since 2×1996149² = 7969221660402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1996109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99 + ... + 2000.

It is an arithmetic number, because the mean of its divisors is an integer number (333900).

2^1996149 is an apocalyptic number.

It is an amenable number.

1996149 is a deficient number, since it is larger than the sum of its proper divisors (675051).

1996149 is a wasteful number, since it uses less digits than its factorization.

1996149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2419.

The product of its digits is 17496, while the sum is 39.

The square root of 1996149 is about 1412.8513722257. The cubic root of 1996149 is about 125.9111870987.

It can be divided in two parts, 1996 and 149, that added together give a triangular number (2145 = T₆₅).

The spelling of 1996149 in words is "one million, nine hundred ninety-six thousand, one hundred forty-nine".