1900098 has 40 divisors (see below), whose sum is σ = 4386492. Its totient is φ = 614304.

The previous prime is 1900079. The next prime is 1900111. The reversal of 1900098 is 8900091.

It can be written as a sum of positive squares in 2 ways, for example, as 1896129 + 3969 = 1377^2 + 63^2 .

It is a super-2 number, since 2×1900098² = 7220744819208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5836 + ... + 6152.

2^1900098 is an apocalyptic number.

1900098 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1900098, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2193246).

1900098 is an abundant number, since it is smaller than the sum of its proper divisors (2486394).

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

1900098 is a wasteful number, since it uses less digits than its factorization.

1900098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368 (or 359 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The square root of 1900098 is about 1378.4404230869. The cubic root of 1900098 is about 123.8583623844.

The spelling of 1900098 in words is "one million, nine hundred thousand, ninety-eight".