1959945 has 48 divisors (see below), whose sum is σ = 3716160. Its totient is φ = 874368.

The previous prime is 1959943. The next prime is 1959949. The reversal of 1959945 is 5499591.

1959945 = 10² + 11² + ... + 180².

It is a happy number.

It is not a de Polignac number, because 1959945 - 2¹ = 1959943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1959897 and 1959906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1959941) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 85204 + ... + 85226.

It is an arithmetic number, because the mean of its divisors is an integer number (77420).

2^1959945 is an apocalyptic number.

1959945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1959945 is a deficient number, since it is larger than the sum of its proper divisors (1756215).

1959945 is a wasteful number, since it uses less digits than its factorization.

1959945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86 (or 63 counting only the distinct ones).

The product of its digits is 72900, while the sum is 42.

The square root of 1959945 is about 1399.9803570051. The cubic root of 1959945 is about 125.1453243146.

The spelling of 1959945 in words is "one million, nine hundred fifty-nine thousand, nine hundred forty-five".