2091954628 has 12 divisors (see below), whose sum is σ = 3667950972. Its totient is φ = 1043968640.

The previous prime is 2091954611. The next prime is 2091954629. The reversal of 2091954628 is 8264591902.

It can be written as a sum of positive squares in 2 ways, for example, as 904325184 + 1187629444 = 30072^2 + 34462^2 .

It is a super-2 number, since 2×2091954628² = 8752548331221236768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2091954629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 499825 + ... + 503992.

It is an arithmetic number, because the mean of its divisors is an integer number (305662581).

Almost surely, 2^2091954628 is an apocalyptic number.

It is an amenable number.

2091954628 is a deficient number, since it is larger than the sum of its proper divisors (1575996344).

2091954628 is a wasteful number, since it uses less digits than its factorization.

2091954628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1004342 (or 1004340 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 46.

The square root of 2091954628 is about 45737.8905066685. The cubic root of 2091954628 is about 1278.9417172301.

The spelling of 2091954628 in words is "two billion, ninety-one million, nine hundred fifty-four thousand, six hundred twenty-eight".