1996689490 has 16 divisors (see below), whose sum is σ = 3603530880. Its totient is φ = 796566960.

The previous prime is 1996689479. The next prime is 1996689533. The reversal of 1996689490 is 949866991.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259626 + ... + 267205.

It is an arithmetic number, because the mean of its divisors is an integer number (225220680).

Almost surely, 2^1996689490 is an apocalyptic number.

1996689490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1996689490 is a deficient number, since it is larger than the sum of its proper divisors (1606841390).

1996689490 is a wasteful number, since it uses less digits than its factorization.

1996689490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527217.

The product of its (nonzero) digits is 7558272, while the sum is 61.

The square root of 1996689490 is about 44684.3315939715. The cubic root of 1996689490 is about 1259.2255024450.

The spelling of 1996689490 in words is "one billion, nine hundred ninety-six million, six hundred eighty-nine thousand, four hundred ninety".