1470421661 has 2 divisors, whose sum is σ = 1470421662. Its totient is φ = 1470421660.

The previous prime is 1470421639. The next prime is 1470421697. The reversal of 1470421661 is 1661240741.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1139400025 + 331021636 = 33755^2 + 18194^2 .

It is a cyclic number.

It is not a de Polignac number, because 1470421661 - 2²⁶ = 1403312797 is a prime.

It is a super-2 number, since 2×1470421661² = 4324279722275997842, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1470421861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 735210830 + 735210831.

It is an arithmetic number, because the mean of its divisors is an integer number (735210831).

Almost surely, 2^1470421661 is an apocalyptic number.

It is an amenable number.

1470421661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1470421661 is an equidigital number, since it uses as much as digits as its factorization.

1470421661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 1470421661 is about 38346.0775177853. The cubic root of 1470421661 is about 1137.1400717048.

The spelling of 1470421661 in words is "one billion, four hundred seventy million, four hundred twenty-one thousand, six hundred sixty-one".