1453343661 has 32 divisors (see below), whose sum is σ = 2684390400. Its totient is φ = 754982640.

The previous prime is 1453343653. The next prime is 1453343669. The reversal of 1453343661 is 1663433541.

It is an interprime number because it is at equal distance from previous prime (1453343653) and next prime (1453343669).

It is not a de Polignac number, because 1453343661 - 2³ = 1453343653 is a prime.

It is a super-2 number, since 2×1453343661² = 4224415593937765842, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1453343669) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 347451 + ... + 351608.

It is an arithmetic number, because the mean of its divisors is an integer number (83887200).

Almost surely, 2^1453343661 is an apocalyptic number.

1453343661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1453343661 is a deficient number, since it is larger than the sum of its proper divisors (1231046739).

1453343661 is a wasteful number, since it uses less digits than its factorization.

1453343661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699086 (or 699080 counting only the distinct ones).

The product of its digits is 77760, while the sum is 36.

The square root of 1453343661 is about 38122.7446677177. The cubic root of 1453343661 is about 1132.7205342198.

The spelling of 1453343661 in words is "one billion, four hundred fifty-three million, three hundred forty-three thousand, six hundred sixty-one".