1929091051 has 2 divisors, whose sum is σ = 1929091052. Its totient is φ = 1929091050.

The previous prime is 1929091037. The next prime is 1929091103. The reversal of 1929091051 is 1501909291.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1929091051 - 2⁵ = 1929091019 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1929091051.

It is not a weakly prime, because it can be changed into another prime (1929091651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 964545525 + 964545526.

It is an arithmetic number, because the mean of its divisors is an integer number (964545526).

Almost surely, 2^1929091051 is an apocalyptic number.

1929091051 is a deficient number, since it is larger than the sum of its proper divisors (1).

1929091051 is an equidigital number, since it uses as much as digits as its factorization.

1929091051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7290, while the sum is 37.

The square root of 1929091051 is about 43921.4190458369. The cubic root of 1929091051 is about 1244.8515816903.

The spelling of 1929091051 in words is "one billion, nine hundred twenty-nine million, ninety-one thousand, fifty-one".