1978033 has 4 divisors (see below), whose sum is σ = 2082160. Its totient is φ = 1873908.

The previous prime is 1978027. The next prime is 1978037. The reversal of 1978033 is 3308791.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1978033 is a prime.

It is a super-2 number, since 2×1978033² = 7825229098178, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1977986 and 1978004.

It is not an unprimeable number, because it can be changed into a prime (1978037) 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, 52035 + ... + 52072.

It is an arithmetic number, because the mean of its divisors is an integer number (520540).

2^1978033 is an apocalyptic number.

It is an amenable number.

1978033 is a deficient number, since it is larger than the sum of its proper divisors (104127).

1978033 is a wasteful number, since it uses less digits than its factorization.

1978033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104126.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 1978033 is about 1406.4256112571. The cubic root of 1978033 is about 125.5291276973.

The spelling of 1978033 in words is "one million, nine hundred seventy-eight thousand, thirty-three".