1978037005 has 32 divisors (see below), whose sum is σ = 2786999040. Its totient is φ = 1319431680.

The previous prime is 1978036999. The next prime is 1978037041. The reversal of 1978037005 is 5007308791.

It is not a de Polignac number, because 1978037005 - 2⁹ = 1978036493 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 542047 + ... + 545683.

It is an arithmetic number, because the mean of its divisors is an integer number (87093720).

Almost surely, 2^1978037005 is an apocalyptic number.

It is an amenable number.

1978037005 is a deficient number, since it is larger than the sum of its proper divisors (808962035).

1978037005 is a wasteful number, since it uses less digits than its factorization.

1978037005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4069.

The product of its (nonzero) digits is 52920, while the sum is 40.

The square root of 1978037005 is about 44475.1279368593. The cubic root of 1978037005 is about 1255.2921241849.

The spelling of 1978037005 in words is "one billion, nine hundred seventy-eight million, thirty-seven thousand, five".