1906012791 has 12 divisors (see below), whose sum is σ = 2848065480. Its totient is φ = 1226858640.

The previous prime is 1906012781. The next prime is 1906012819. The reversal of 1906012791 is 1972106091.

It is not a de Polignac number, because 1906012791 - 2⁶ = 1906012727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1906012781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3651105 + ... + 3651626.

It is an arithmetic number, because the mean of its divisors is an integer number (237338790).

Almost surely, 2^1906012791 is an apocalyptic number.

1906012791 is a deficient number, since it is larger than the sum of its proper divisors (942052689).

1906012791 is a wasteful number, since it uses less digits than its factorization.

1906012791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7302766 (or 7302763 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 36.

The square root of 1906012791 is about 43657.9063973526. The cubic root of 1906012791 is about 1239.8674830204.

The spelling of 1906012791 in words is "one billion, nine hundred six million, twelve thousand, seven hundred ninety-one".