1361990 has 16 divisors (see below), whose sum is σ = 2801952. Its totient is φ = 466944.

The previous prime is 1361963. The next prime is 1361999. The reversal of 1361990 is 991631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1361999) 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, 9659 + ... + 9798.

It is an arithmetic number, because the mean of its divisors is an integer number (175122).

2^1361990 is an apocalyptic number.

1361990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1361990 is an abundant number, since it is smaller than the sum of its proper divisors (1439962).

1361990 is a wasteful number, since it uses less digits than its factorization.

1361990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19471.

The product of its (nonzero) digits is 1458, while the sum is 29.

The square root of 1361990 is about 1167.0432725482. The cubic root of 1361990 is about 110.8471776225.

The spelling of 1361990 in words is "one million, three hundred sixty-one thousand, nine hundred ninety".