1900061 has 8 divisors (see below), whose sum is σ = 1976760. Its totient is φ = 1824768.

The previous prime is 1900049. The next prime is 1900079. The reversal of 1900061 is 1600091.

It can be written as a sum of positive squares in 4 ways, for example, as 988036 + 912025 = 994^2 + 955^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1900061 is a prime.

It is a super-2 number, since 2×1900061² = 7220463607442, which contains 22 as substring.

1900061 is a strobogrammatic number because it is the same when read upside-down.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1900861) 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, 3005 + ... + 3581.

It is an arithmetic number, because the mean of its divisors is an integer number (247095).

2^1900061 is an apocalyptic number.

It is an amenable number.

1900061 is a deficient number, since it is larger than the sum of its proper divisors (76699).

1900061 is an equidigital number, since it uses as much as digits as its factorization.

1900061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 1900061 is about 1378.4270020571. The cubic root of 1900061 is about 123.8575584278.

The spelling of 1900061 in words is "one million, nine hundred thousand, sixty-one".