1618974427 has 8 divisors (see below), whose sum is σ = 1851424992. Its totient is φ = 1386816000.

The previous prime is 1618974389. The next prime is 1618974527. The reversal of 1618974427 is 7244798161.

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-1618974427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1618974127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61024 + ... + 83437.

It is an arithmetic number, because the mean of its divisors is an integer number (231428124).

Almost surely, 2^1618974427 is an apocalyptic number.

1618974427 is a deficient number, since it is larger than the sum of its proper divisors (232450565).

1618974427 is a wasteful number, since it uses less digits than its factorization.

1618974427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146069.

The product of its digits is 677376, while the sum is 49.

The square root of 1618974427 is about 40236.4812949642. The cubic root of 1618974427 is about 1174.2124016035.

The spelling of 1618974427 in words is "one billion, six hundred eighteen million, nine hundred seventy-four thousand, four hundred twenty-seven".