1954690434 has 16 divisors (see below), whose sum is σ = 4343756640. Its totient is φ = 651563460.

The previous prime is 1954690391. The next prime is 1954690459. The reversal of 1954690434 is 4340964591.

1954690434 is a `hidden beast` number, since 1 + 95 + 46 + 90 + 434 = 666.

It is a super-2 number, since 2×1954690434² = 7641629385542216712, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1954690434.

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, 18098932 + ... + 18099039.

It is an arithmetic number, because the mean of its divisors is an integer number (271484790).

Almost surely, 2^1954690434 is an apocalyptic number.

1954690434 is an abundant number, since it is smaller than the sum of its proper divisors (2389066206).

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

1954690434 is a wasteful number, since it uses less digits than its factorization.

1954690434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36197982 (or 36197976 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The square root of 1954690434 is about 44211.8811407070. The cubic root of 1954690434 is about 1250.3338700700. Note that the first 3 decimals are identical.

The spelling of 1954690434 in words is "one billion, nine hundred fifty-four million, six hundred ninety thousand, four hundred thirty-four".