1864849345 has 8 divisors (see below), whose sum is σ = 2238051240. Its totient is φ = 1491724800.

The previous prime is 1864849339. The next prime is 1864849351. The reversal of 1864849345 is 5439484681.

It is an interprime number because it is at equal distance from previous prime (1864849339) and next prime (1864849351).

It can be written as a sum of positive squares in 4 ways, for example, as 340181136 + 1524668209 = 18444^2 + 39047^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1864849345 - 2⁹ = 1864848833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1864849292 and 1864849301.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81871 + ... + 102139.

It is an arithmetic number, because the mean of its divisors is an integer number (279756405).

Almost surely, 2^1864849345 is an apocalyptic number.

It is an amenable number.

1864849345 is a deficient number, since it is larger than the sum of its proper divisors (373201895).

1864849345 is a wasteful number, since it uses less digits than its factorization.

1864849345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38675.

The product of its digits is 3317760, while the sum is 52.

The square root of 1864849345 is about 43183.9014564455. The cubic root of 1864849345 is about 1230.8767945820.

The spelling of 1864849345 in words is "one billion, eight hundred sixty-four million, eight hundred forty-nine thousand, three hundred forty-five".