1119725851 has 4 divisors (see below), whose sum is σ = 1124658792. Its totient is φ = 1114792912.

The previous prime is 1119725843. The next prime is 1119725869. The reversal of 1119725851 is 1585279111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1585279111 = 13 ⋅121944547.

It is a cyclic number.

It is not a de Polignac number, because 1119725851 - 2³ = 1119725843 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1119725801) 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, 2466130 + ... + 2466583.

It is an arithmetic number, because the mean of its divisors is an integer number (281164698).

Almost surely, 2^1119725851 is an apocalyptic number.

1119725851 is a deficient number, since it is larger than the sum of its proper divisors (4932941).

1119725851 is an equidigital number, since it uses as much as digits as its factorization.

1119725851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4932940.

The product of its digits is 25200, while the sum is 40.

The square root of 1119725851 is about 33462.3049265887. The cubic root of 1119725851 is about 1038.4140802971.

The spelling of 1119725851 in words is "one billion, one hundred nineteen million, seven hundred twenty-five thousand, eight hundred fifty-one".