191002010 has 32 divisors (see below), whose sum is σ = 349278480. Its totient is φ = 75192832.

The previous prime is 191001989. The next prime is 191002027. The reversal of 191002010 is 10200191.

It can be written as a sum of positive squares in 8 ways, for example, as 66210769 + 124791241 = 8137^2 + 11171^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 281792 + ... + 282468.

Almost surely, 2^191002010 is an apocalyptic number.

191002010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

191002010 is a deficient number, since it is larger than the sum of its proper divisors (158276470).

191002010 is a wasteful number, since it uses less digits than its factorization.

191002010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1090.

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 191002010 is about 13820.3476801418. The cubic root of 191002010 is about 575.8985422027.

The spelling of 191002010 in words is "one hundred ninety-one million, two thousand, ten".