1961430 has 16 divisors (see below), whose sum is σ = 4707504. Its totient is φ = 523040.

The previous prime is 1961419. The next prime is 1961431. The reversal of 1961430 is 341691.

It is a self number, because there is not a number n which added to its sum of digits gives 1961430.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1961431) 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, 32661 + ... + 32720.

It is an arithmetic number, because the mean of its divisors is an integer number (294219).

2^1961430 is an apocalyptic number.

1961430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1961430 is an abundant number, since it is smaller than the sum of its proper divisors (2746074).

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

1961430 is a wasteful number, since it uses less digits than its factorization.

1961430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65391.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 1961430 is about 1400.5106211664. The cubic root of 1961430 is about 125.1769228018.

The spelling of 1961430 in words is "one million, nine hundred sixty-one thousand, four hundred thirty".