1154195050971 has 4 divisors (see below), whose sum is σ = 1538926734632. Its totient is φ = 769463367312.

The previous prime is 1154195050963. The next prime is 1154195051011. The reversal of 1154195050971 is 1790505914511.

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

It is not a de Polignac number, because 1154195050971 - 2³ = 1154195050963 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1154195050971.

It is not an unprimeable number, because it can be changed into a prime (1154195050961) 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, 192365841826 + ... + 192365841831.

It is an arithmetic number, because the mean of its divisors is an integer number (384731683658).

Almost surely, 2^{1154195050971} is an apocalyptic number.

1154195050971 is a deficient number, since it is larger than the sum of its proper divisors (384731683661).

1154195050971 is an equidigital number, since it uses as much as digits as its factorization.

1154195050971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384731683660.

The product of its (nonzero) digits is 283500, while the sum is 48.

The spelling of 1154195050971 in words is "one trillion, one hundred fifty-four billion, one hundred ninety-five million, fifty thousand, nine hundred seventy-one".