Search a number
-
+
30945151869 = 328921356663
BaseRepresentation
bin11100110100011110…
…011000101101111101
32221212121202120222220
4130310132120231331
51001333424324434
622114353555553
72143564310442
oct346436305575
987777676886
1030945151869
111213a805685
125bb7575bb9
132bc213a268
1416d7b999c9
15c11ac3d49
hex734798b7d

30945151869 has 8 divisors (see below), whose sum is σ = 41261744832. Its totient is φ = 20629330080.

The previous prime is 30945151859. The next prime is 30945151871. The reversal of 30945151869 is 96815154903.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30945151869 - 25 = 30945151837 is a prime.

It is a super-2 number, since 2×309451518692 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30945151849) 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, 91569 + ... + 265094.

It is an arithmetic number, because the mean of its divisors is an integer number (5157718104).

Almost surely, 230945151869 is an apocalyptic number.

It is an amenable number.

30945151869 is a deficient number, since it is larger than the sum of its proper divisors (10316592963).

30945151869 is a wasteful number, since it uses less digits than its factorization.

30945151869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385587.

The product of its (nonzero) digits is 1166400, while the sum is 51.

The spelling of 30945151869 in words is "thirty billion, nine hundred forty-five million, one hundred fifty-one thousand, eight hundred sixty-nine".

Divisors: 1 3 28921 86763 356663 1069989 10315050623 30945151869