1009197051 has 4 divisors (see below), whose sum is σ = 1345596072. Its totient is φ = 672798032.

The previous prime is 1009197047. The next prime is 1009197067. The reversal of 1009197051 is 1507919001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1009197051 - 2² = 1009197047 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1009197251) 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, 168199506 + ... + 168199511.

It is an arithmetic number, because the mean of its divisors is an integer number (336399018).

Almost surely, 2^1009197051 is an apocalyptic number.

1009197051 is a deficient number, since it is larger than the sum of its proper divisors (336399021).

1009197051 is an equidigital number, since it uses as much as digits as its factorization.

1009197051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336399020.

The product of its (nonzero) digits is 2835, while the sum is 33.

The square root of 1009197051 is about 31767.8619205007. The cubic root of 1009197051 is about 1003.0563329788.

The spelling of 1009197051 in words is "one billion, nine million, one hundred ninety-seven thousand, fifty-one".