1978614 has 32 divisors (see below), whose sum is σ = 4798080. Its totient is φ = 599400.

The previous prime is 1978597. The next prime is 1978631. The reversal of 1978614 is 4168791.

It is an interprime number because it is at equal distance from previous prime (1978597) and next prime (1978631).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1072 + ... + 2259.

It is an arithmetic number, because the mean of its divisors is an integer number (149940).

2^1978614 is an apocalyptic number.

1978614 is an abundant number, since it is smaller than the sum of its proper divisors (2819466).

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

1978614 is a wasteful number, since it uses less digits than its factorization.

1978614 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3353 (or 3347 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 1978614 is about 1406.6321480757. The cubic root of 1978614 is about 125.5414168896.

The spelling of 1978614 in words is "one million, nine hundred seventy-eight thousand, six hundred fourteen".