1618628 has 12 divisors (see below), whose sum is σ = 3090192. Its totient is φ = 735720.

The previous prime is 1618627. The next prime is 1618637. The reversal of 1618628 is 8268161.

It is a junction number, because it is equal to n+sod(n) for n = 1618594 and 1618603.

It is not an unprimeable number, because it can be changed into a prime (1618627) 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, 18350 + ... + 18437.

It is an arithmetic number, because the mean of its divisors is an integer number (257516).

2^1618628 is an apocalyptic number.

It is an amenable number.

1618628 is a deficient number, since it is larger than the sum of its proper divisors (1471564).

1618628 is a wasteful number, since it uses less digits than its factorization.

1618628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36802 (or 36800 counting only the distinct ones).

The product of its digits is 4608, while the sum is 32.

The square root of 1618628 is about 1272.2531194695. The cubic root of 1618628 is about 117.4128643250.

The spelling of 1618628 in words is "one million, six hundred eighteen thousand, six hundred twenty-eight".