1201092951 has 4 divisors (see below), whose sum is σ = 1601457272. Its totient is φ = 800728632.

The previous prime is 1201092947. The next prime is 1201092953. The reversal of 1201092951 is 1592901021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1592901021 = 3 ⋅530967007.

It is not a de Polignac number, because 1201092951 - 2² = 1201092947 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 (1201092953) 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, 200182156 + ... + 200182161.

It is an arithmetic number, because the mean of its divisors is an integer number (400364318).

Almost surely, 2^1201092951 is an apocalyptic number.

1201092951 is a deficient number, since it is larger than the sum of its proper divisors (400364321).

1201092951 is an equidigital number, since it uses as much as digits as its factorization.

1201092951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400364320.

The product of its (nonzero) digits is 1620, while the sum is 30.

The square root of 1201092951 is about 34656.7879498375. The cubic root of 1201092951 is about 1062.9810917703.

Adding to 1201092951 its reverse (1592901021), we get a palindrome (2793993972).

The spelling of 1201092951 in words is "one billion, two hundred one million, ninety-two thousand, nine hundred fifty-one".