1978240302 has 24 divisors (see below), whose sum is σ = 4295154240. Its totient is φ = 658036788.

The previous prime is 1978240273. The next prime is 1978240321. The reversal of 1978240302 is 2030428791.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4129699 + ... + 4130177.

It is an arithmetic number, because the mean of its divisors is an integer number (178964760).

Almost surely, 2^1978240302 is an apocalyptic number.

1978240302 is an abundant number, since it is smaller than the sum of its proper divisors (2316913938).

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

1978240302 is an frugal number, since it uses more digits than its factorization.

1978240302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1445 (or 484 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 1978240302 is about 44477.4133915182. The cubic root of 1978240302 is about 1255.3351278261.

The spelling of 1978240302 in words is "one billion, nine hundred seventy-eight million, two hundred forty thousand, three hundred two".