1945049 has 8 divisors (see below), whose sum is σ = 2063040. Its totient is φ = 1828656.

The previous prime is 1945043. The next prime is 1945051. The reversal of 1945049 is 9405491.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1945049 is a prime.

It is a super-2 number, since 2×1945049² = 7566431224802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1945043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2867 + ... + 3479.

It is an arithmetic number, because the mean of its divisors is an integer number (257880).

2^1945049 is an apocalyptic number.

1945049 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1945049 is a deficient number, since it is larger than the sum of its proper divisors (117991).

1945049 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (1945048) it forms a Ruth-Aaron pair, since the sum of their prime factors is the same (799).

1945049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 1945049 is about 1394.6501353386. The cubic root of 1945049 is about 124.8274739878.

The spelling of 1945049 in words is "one million, nine hundred forty-five thousand, forty-nine".