1455159690 has 36 divisors (see below), whose sum is σ = 3784356342. Its totient is φ = 387946080.

The previous prime is 1455159683. The next prime is 1455159691. The reversal of 1455159690 is 969515541.

It is a happy number.

1455159690 is a `hidden beast` number, since 1 + 4 + 5 + 51 + 596 + 9 + 0 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 420701121 + 1034458569 = 20511^2 + 32163^2 .

It is a super-2 number, since 2×1455159690² = 4234979446801792200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (1455159691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 359880 + ... + 363900.

Almost surely, 2^1455159690 is an apocalyptic number.

1455159690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1455159690 is an abundant number, since it is smaller than the sum of its proper divisors (2329196652).

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

1455159690 is an frugal number, since it uses more digits than its factorization.

1455159690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8055 (or 4031 counting only the distinct ones).

The product of its (nonzero) digits is 243000, while the sum is 45.

The square root of 1455159690 is about 38146.5554146112. Note that the first 3 decimals coincide. The cubic root of 1455159690 is about 1133.1921357159.

The spelling of 1455159690 in words is "one billion, four hundred fifty-five million, one hundred fifty-nine thousand, six hundred ninety".