1900349 has 4 divisors (see below), whose sum is σ = 2073120. Its totient is φ = 1727580.

The previous prime is 1900337. The next prime is 1900363. The reversal of 1900349 is 9430091.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9430091 = 11 ⋅857281.

It is a cyclic number.

It is not a de Polignac number, because 1900349 - 2¹⁶ = 1834813 is a prime.

It is a super-2 number, since 2×1900349² = 7222652643602, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1900369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86369 + ... + 86390.

It is an arithmetic number, because the mean of its divisors is an integer number (518280).

2^1900349 is an apocalyptic number.

It is an amenable number.

1900349 is a deficient number, since it is larger than the sum of its proper divisors (172771).

1900349 is a wasteful number, since it uses less digits than its factorization.

1900349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172770.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 1900349 is about 1378.5314650018. The cubic root of 1900349 is about 123.8638159769.

The spelling of 1900349 in words is "one million, nine hundred thousand, three hundred forty-nine".