1621414087 has 2 divisors, whose sum is σ = 1621414088. Its totient is φ = 1621414086.

The previous prime is 1621414063. The next prime is 1621414103. The reversal of 1621414087 is 7804141261.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1621414087 is a prime.

It is a super-3 number, since 3×1621414087³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1621414027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 810707043 + 810707044.

It is an arithmetic number, because the mean of its divisors is an integer number (810707044).

Almost surely, 2^1621414087 is an apocalyptic number.

1621414087 is a deficient number, since it is larger than the sum of its proper divisors (1).

1621414087 is an equidigital number, since it uses as much as digits as its factorization.

1621414087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 1621414087 is about 40266.7864002083. The cubic root of 1621414087 is about 1174.8019191069.

The spelling of 1621414087 in words is "one billion, six hundred twenty-one million, four hundred fourteen thousand, eighty-seven".