1900426250 has 20 divisors (see below), whose sum is σ = 3562161306. Its totient is φ = 760170000.

The previous prime is 1900426223. The next prime is 1900426259. The reversal of 1900426250 is 526240091.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 28912129 + 1871514121 = 5377^2 + 43261^2 .

It is a super-2 number, since 2×1900426250² = 7223239863378125000, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1900426259) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 758921 + ... + 761420.

Almost surely, 2^1900426250 is an apocalyptic number.

1900426250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1900426250 is a deficient number, since it is larger than the sum of its proper divisors (1661735056).

1900426250 is an equidigital number, since it uses as much as digits as its factorization.

1900426250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1520363 (or 1520348 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 1900426250 is about 43593.8785840398. The cubic root of 1900426250 is about 1238.6549432650.

It can be divided in two parts, 19004 and 26250, that added together give a palindrome (45254).

The spelling of 1900426250 in words is "one billion, nine hundred million, four hundred twenty-six thousand, two hundred fifty".