1948436986 has 32 divisors (see below), whose sum is σ = 3084480000. Its totient is φ = 921810240.

The previous prime is 1948436981. The next prime is 1948436989. The reversal of 1948436986 is 6896348491.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1948436986.

It is not an unprimeable number, because it can be changed into a prime (1948436981) 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, 1145965 + ... + 1147663.

It is an arithmetic number, because the mean of its divisors is an integer number (96390000).

Almost surely, 2^1948436986 is an apocalyptic number.

1948436986 is a deficient number, since it is larger than the sum of its proper divisors (1136043014).

1948436986 is a wasteful number, since it uses less digits than its factorization.

1948436986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2134.

The product of its digits is 8957952, while the sum is 58.

The square root of 1948436986 is about 44141.1031352865. The cubic root of 1948436986 is about 1248.9990891025. Note that the first 3 decimals are identical.

The spelling of 1948436986 in words is "one billion, nine hundred forty-eight million, four hundred thirty-six thousand, nine hundred eighty-six".