1491965 has 8 divisors (see below), whose sum is σ = 1801440. Its totient is φ = 1186192.

The previous prime is 1491961. The next prime is 1491967. The reversal of 1491965 is 5691941.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1491965 - 2² = 1491961 is a prime.

It is a super-2 number, since 2×1491965² = 4451919122450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1491961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62 + ... + 1728.

It is an arithmetic number, because the mean of its divisors is an integer number (225180).

2^1491965 is an apocalyptic number.

It is an amenable number.

1491965 is a deficient number, since it is larger than the sum of its proper divisors (309475).

1491965 is a wasteful number, since it uses less digits than its factorization.

1491965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1851.

The product of its digits is 9720, while the sum is 35.

The square root of 1491965 is about 1221.4601917377. The cubic root of 1491965 is about 114.2666631190.

The spelling of 1491965 in words is "one million, four hundred ninety-one thousand, nine hundred sixty-five".