1980428948 has 6 divisors (see below), whose sum is σ = 3465750666. Its totient is φ = 990214472.

The previous prime is 1980428917. The next prime is 1980428977. The reversal of 1980428948 is 8498240891.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1046393104 + 934035844 = 32348^2 + 30562^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1980428948.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247553615 + ... + 247553622.

It is an arithmetic number, because the mean of its divisors is an integer number (577625111).

Almost surely, 2^1980428948 is an apocalyptic number.

It is an amenable number.

1980428948 is a deficient number, since it is larger than the sum of its proper divisors (1485321718).

1980428948 is a wasteful number, since it uses less digits than its factorization.

1980428948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495107241 (or 495107239 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 53.

The square root of 1980428948 is about 44502.0106062636. The cubic root of 1980428948 is about 1255.7979080707.

The spelling of 1980428948 in words is "one billion, nine hundred eighty million, four hundred twenty-eight thousand, nine hundred forty-eight".