1978292483 has 16 divisors (see below), whose sum is σ = 2113420800. Its totient is φ = 1846372320.

The previous prime is 1978292453. The next prime is 1978292489. The reversal of 1978292483 is 3842928791.

It is a Cunningham number, because it is equal to 44478²-1.

It is a cyclic number.

It is not a de Polignac number, because 1978292483 - 2¹² = 1978288387 is a prime.

It is a super-2 number, since 2×1978292483² = 7827282296588610578, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1978292489) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 843893 + ... + 846233.

It is an arithmetic number, because the mean of its divisors is an integer number (132088800).

Almost surely, 2^1978292483 is an apocalyptic number.

1978292483 is a deficient number, since it is larger than the sum of its proper divisors (135128317).

1978292483 is a wasteful number, since it uses less digits than its factorization.

1978292483 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3002.

The product of its digits is 1741824, while the sum is 53.

The square root of 1978292483 is about 44477.9999887585. Note that the first 4 decimals coincide. The cubic root of 1978292483 is about 1255.3461652560.

The spelling of 1978292483 in words is "one billion, nine hundred seventy-eight million, two hundred ninety-two thousand, four hundred eighty-three".