1913630 has 16 divisors (see below), whose sum is σ = 3556224. Its totient is φ = 740640.

The previous prime is 1913627. The next prime is 1913641. The reversal of 1913630 is 363191.

1913630 = T₁₁₀ + T₁₁₁ + ... + T₂₃₃.

It is a junction number, because it is equal to n+sod(n) for n = 1913596 and 1913605.

It is a congruent number.

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, 2777 + ... + 3396.

It is an arithmetic number, because the mean of its divisors is an integer number (222264).

2^1913630 is an apocalyptic number.

1913630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1913630 is a deficient number, since it is larger than the sum of its proper divisors (1642594).

1913630 is a wasteful number, since it uses less digits than its factorization.

1913630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6211.

The product of its (nonzero) digits is 486, while the sum is 23.

The square root of 1913630 is about 1383.3401606257. The cubic root of 1913630 is about 124.1516960666.

The spelling of 1913630 in words is "one million, nine hundred thirteen thousand, six hundred thirty".