1945554 has 16 divisors (see below), whose sum is σ = 4190592. Its totient is φ = 598608.

The previous prime is 1945553. The next prime is 1945561. The reversal of 1945554 is 4555491.

It is not an unprimeable number, because it can be changed into a prime (1945553) 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, 12394 + ... + 12549.

It is an arithmetic number, because the mean of its divisors is an integer number (261912).

2^1945554 is an apocalyptic number.

1945554 is an abundant number, since it is smaller than the sum of its proper divisors (2245038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1945554 is a wasteful number, since it uses less digits than its factorization.

1945554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24961.

The product of its digits is 18000, while the sum is 33.

The square root of 1945554 is about 1394.8311725797. The cubic root of 1945554 is about 124.8382761868.

The spelling of 1945554 in words is "one million, nine hundred forty-five thousand, five hundred fifty-four".