1949540 has 24 divisors (see below), whose sum is σ = 4136832. Its totient is φ = 771680.

The previous prime is 1949539. The next prime is 1949557. The reversal of 1949540 is 459491.

1949540 = T₂₉₂ + T₂₉₃ + ... + T₃₃₁.

It is a plaindrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 1949497 and 1949506.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1685 + ... + 2595.

It is an arithmetic number, because the mean of its divisors is an integer number (172368).

2^1949540 is an apocalyptic number.

1949540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1949540 is an abundant number, since it is smaller than the sum of its proper divisors (2187292).

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

1949540 is a wasteful number, since it uses less digits than its factorization.

1949540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1027 (or 1025 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 1949540 is about 1396.2592882413. The cubic root of 1949540 is about 124.9234731587.

The spelling of 1949540 in words is "one million, nine hundred forty-nine thousand, five hundred forty".