1190409931901 has 4 divisors (see below), whose sum is σ = 1192168292892. Its totient is φ = 1188651570912.

The previous prime is 1190409931847. The next prime is 1190409931957. The reversal of 1190409931901 is 1091399040911.

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

It can be written as a sum of positive squares in 2 ways, for example, as 799942416025 + 390467515876 = 894395^2 + 624874^2 .

It is a cyclic number.

It is not a de Polignac number, because 1190409931901 - 2¹⁴ = 1190409915517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1190409961901) 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, 879179480 + ... + 879180833.

It is an arithmetic number, because the mean of its divisors is an integer number (298042073223).

Almost surely, 2^{1190409931901} is an apocalyptic number.

It is an amenable number.

1190409931901 is a deficient number, since it is larger than the sum of its proper divisors (1758360991).

1190409931901 is an equidigital number, since it uses as much as digits as its factorization.

1190409931901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1758360990.

The product of its (nonzero) digits is 78732, while the sum is 47.

The spelling of 1190409931901 in words is "one trillion, one hundred ninety billion, four hundred nine million, nine hundred thirty-one thousand, nine hundred one".