1966485015 has 24 divisors (see below), whose sum is σ = 3718445328. Its totient is φ = 953447040.

The previous prime is 1966485011. The next prime is 1966485019. The reversal of 1966485015 is 5105846691.

It is an interprime number because it is at equal distance from previous prime (1966485011) and next prime (1966485019).

It is not a de Polignac number, because 1966485015 - 2² = 1966485011 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1966485011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1985854 + ... + 1986843.

It is an arithmetic number, because the mean of its divisors is an integer number (154935222).

Almost surely, 2^1966485015 is an apocalyptic number.

1966485015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1966485015 is a deficient number, since it is larger than the sum of its proper divisors (1751960313).

1966485015 is a wasteful number, since it uses less digits than its factorization.

1966485015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3972719 (or 3972716 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The square root of 1966485015 is about 44345.0675385662. The cubic root of 1966485015 is about 1252.8436624946.

The spelling of 1966485015 in words is "one billion, nine hundred sixty-six million, four hundred eighty-five thousand, fifteen".