1867869049 has 4 divisors (see below), whose sum is σ = 1870572880. Its totient is φ = 1865165220.

The previous prime is 1867869011. The next prime is 1867869109. The reversal of 1867869049 is 9409687681.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1867869049 - 2⁷ = 1867868921 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1867868984 and 1867869002.

It is not an unprimeable number, because it can be changed into a prime (1867861049) 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, 1350879 + ... + 1352260.

It is an arithmetic number, because the mean of its divisors is an integer number (467643220).

Almost surely, 2^1867869049 is an apocalyptic number.

It is an amenable number.

1867869049 is a deficient number, since it is larger than the sum of its proper divisors (2703831).

1867869049 is an equidigital number, since it uses as much as digits as its factorization.

1867869049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2703830.

The product of its (nonzero) digits is 5225472, while the sum is 58.

The square root of 1867869049 is about 43218.8506209964. The cubic root of 1867869049 is about 1231.5408123258.

The spelling of 1867869049 in words is "one billion, eight hundred sixty-seven million, eight hundred sixty-nine thousand, forty-nine".