1461990 has 16 divisors (see below), whose sum is σ = 3508848. Its totient is φ = 389856.

The previous prime is 1461989. The next prime is 1462001. The reversal of 1461990 is 991641.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 48733 = 1461990 / (1 + 4 + 6 + 1 + 9 + 9 + 0).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24337 + ... + 24396.

It is an arithmetic number, because the mean of its divisors is an integer number (219303).

2^1461990 is an apocalyptic number.

1461990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1461990 is an abundant number, since it is smaller than the sum of its proper divisors (2046858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1461990 is a wasteful number, since it uses less digits than its factorization.

1461990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48743.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 1461990 is about 1209.1277848102. The cubic root of 1461990 is about 113.4962382395.

The spelling of 1461990 in words is "one million, four hundred sixty-one thousand, nine hundred ninety".