1192490851 has 4 divisors (see below), whose sum is σ = 1192992400. Its totient is φ = 1191989304.

The previous prime is 1192490839. The next prime is 1192490861. The reversal of 1192490851 is 1580942911.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1580942911 = 431 ⋅3668081.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1192490851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1192490861) 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, 247191 + ... + 251968.

It is an arithmetic number, because the mean of its divisors is an integer number (298248100).

Almost surely, 2^1192490851 is an apocalyptic number.

1192490851 is a deficient number, since it is larger than the sum of its proper divisors (501549).

1192490851 is an equidigital number, since it uses as much as digits as its factorization.

1192490851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501548.

The product of its (nonzero) digits is 25920, while the sum is 40.

The square root of 1192490851 is about 34532.4608303550. The cubic root of 1192490851 is about 1060.4373569012.

The spelling of 1192490851 in words is "one billion, one hundred ninety-two million, four hundred ninety thousand, eight hundred fifty-one".