1691400130 has 48 divisors (see below), whose sum is σ = 3608462520. Its totient is φ = 568958208.

The previous prime is 1691400119. The next prime is 1691400143. The reversal of 1691400130 is 310041961.

It can be written as a sum of positive squares in 4 ways, for example, as 1160696761 + 530703369 = 34069^2 + 23037^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1691400095 and 1691400104.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6595 + ... + 58534.

Almost surely, 2^1691400130 is an apocalyptic number.

1691400130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1691400130 is an abundant number, since it is smaller than the sum of its proper divisors (1917062390).

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

1691400130 is a wasteful number, since it uses less digits than its factorization.

1691400130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65203 (or 65196 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 1691400130 is about 41126.6352866363. The cubic root of 1691400130 is about 1191.4672789026.

The spelling of 1691400130 in words is "one billion, six hundred ninety-one million, four hundred thousand, one hundred thirty".